diff --git a/packages/flutter_tools/lib/src/asset.dart b/packages/flutter_tools/lib/src/asset.dart
index 53b823373ef..0c220f8f0f5 100644
--- a/packages/flutter_tools/lib/src/asset.dart
+++ b/packages/flutter_tools/lib/src/asset.dart
@@ -195,7 +195,7 @@ abstract class AssetBundle {
     String manifestPath = defaultManifestPath,
     required String packageConfigPath,
     bool deferredComponentsEnabled = false,
-    TargetPlatform? targetPlatform,
+    required TargetPlatform targetPlatform,
     String? flavor,
     bool includeAssetsFromDevDependencies = false,
   });
@@ -326,7 +326,7 @@ class ManifestAssetBundle implements AssetBundle {
     FlutterProject? flutterProject,
     required String packageConfigPath,
     bool deferredComponentsEnabled = false,
-    TargetPlatform? targetPlatform,
+    required TargetPlatform targetPlatform,
     String? flavor,
     bool includeAssetsFromDevDependencies = false,
   }) async {
@@ -402,6 +402,7 @@ class ManifestAssetBundle implements AssetBundle {
           assetBasePath,
           wildcardDirectories,
           flutterProject.directory,
+          targetPlatform: targetPlatform,
           flavor: flavor,
         );
     if (!_splitDeferredAssets || !deferredComponentsEnabled) {
@@ -716,7 +717,7 @@ class ManifestAssetBundle implements AssetBundle {
     }
   }
 
-  void _setLicenseIfChanged(String combinedLicenses, TargetPlatform? targetPlatform) {
+  void _setLicenseIfChanged(String combinedLicenses, TargetPlatform targetPlatform) {
     // On the web, don't compress the NOTICES file since the client doesn't have
     // dart:io to decompress it. So use the standard _setIfChanged to check if
     // the strings still match.
@@ -838,6 +839,7 @@ class ManifestAssetBundle implements AssetBundle {
     String assetBasePath,
     List<Uri> wildcardDirectories,
     Directory projectDirectory, {
+    required TargetPlatform targetPlatform,
     String? flavor,
   }) {
     final List<DeferredComponent>? components = flutterManifest.deferredComponents;
@@ -859,6 +861,7 @@ class ManifestAssetBundle implements AssetBundle {
             componentAssets,
             assetsEntry.uri,
             flavors: assetsEntry.flavors,
+            platforms: assetsEntry.platforms,
             transformers: assetsEntry.transformers,
           );
         } else {
@@ -870,13 +873,15 @@ class ManifestAssetBundle implements AssetBundle {
             componentAssets,
             assetsEntry.uri,
             flavors: assetsEntry.flavors,
+            platforms: assetsEntry.platforms,
             transformers: assetsEntry.transformers,
           );
         }
       }
 
       componentAssets.removeWhere(
-        (_Asset asset, List<_Asset> variants) => !asset.matchesFlavor(flavor),
+        (_Asset asset, List<_Asset> variants) =>
+            !asset.matchesFlavor(flavor) || !asset.matchesPlatform(targetPlatform),
       );
       deferredComponentsAssetVariants[component.name] = componentAssets;
     }
@@ -1018,7 +1023,7 @@ class ManifestAssetBundle implements AssetBundle {
     FlutterManifest flutterManifest,
     List<Uri> wildcardDirectories,
     String assetBase,
-    TargetPlatform? targetPlatform, {
+    TargetPlatform targetPlatform, {
     String? packageName,
     Package? attributedPackage,
     required String? flavor,
@@ -1039,6 +1044,7 @@ class ManifestAssetBundle implements AssetBundle {
           packageName: packageName,
           attributedPackage: attributedPackage,
           flavors: assetsEntry.flavors,
+          platforms: assetsEntry.platforms,
           transformers: assetsEntry.transformers,
         );
       } else {
@@ -1052,6 +1058,7 @@ class ManifestAssetBundle implements AssetBundle {
           packageName: packageName,
           attributedPackage: attributedPackage,
           flavors: assetsEntry.flavors,
+          platforms: assetsEntry.platforms,
           transformers: assetsEntry.transformers,
         );
       }
@@ -1066,6 +1073,15 @@ class ManifestAssetBundle implements AssetBundle {
         );
         return true;
       }
+      if (!asset.matchesPlatform(targetPlatform)) {
+        _logger.printTrace(
+          'Skipping assets entry "${asset.entryUri.path}" since '
+          'its configured platform(s) did not match the target platform.\n'
+          'Configured platforms: ${asset.platforms.join(', ')}\n'
+          'Target platform: ${targetPlatform.osName}\n',
+        );
+        return true;
+      }
       return false;
     });
 
@@ -1101,6 +1117,7 @@ class ManifestAssetBundle implements AssetBundle {
         attributedPackage: attributedPackage,
         assetKind: AssetKind.shader,
         flavors: <String>{},
+        platforms: <String>{},
         transformers: <AssetTransformerEntry>[],
       );
     }
@@ -1116,6 +1133,7 @@ class ManifestAssetBundle implements AssetBundle {
           attributedPackage,
           assetKind: AssetKind.font,
           flavors: <String>{},
+          platforms: <String>{},
           transformers: <AssetTransformerEntry>[],
         );
         final File baseAssetFile = baseAsset.lookupAssetFile(_fileSystem);
@@ -1142,6 +1160,7 @@ class ManifestAssetBundle implements AssetBundle {
     String? packageName,
     Package? attributedPackage,
     required Set<String> flavors,
+    required Set<String> platforms,
     required List<AssetTransformerEntry> transformers,
   }) {
     final String directoryPath;
@@ -1174,6 +1193,7 @@ class ManifestAssetBundle implements AssetBundle {
         attributedPackage: attributedPackage,
         originUri: assetUri,
         flavors: flavors,
+        platforms: platforms,
         transformers: transformers,
       );
     }
@@ -1191,6 +1211,7 @@ class ManifestAssetBundle implements AssetBundle {
     Package? attributedPackage,
     AssetKind assetKind = AssetKind.regular,
     required Set<String> flavors,
+    required Set<String> platforms,
     required List<AssetTransformerEntry> transformers,
   }) {
     final _Asset asset = _resolveAsset(
@@ -1202,6 +1223,7 @@ class ManifestAssetBundle implements AssetBundle {
       assetKind: assetKind,
       originUri: originUri,
       flavors: flavors,
+      platforms: platforms,
       transformers: transformers,
     );
 
@@ -1225,6 +1247,7 @@ class ManifestAssetBundle implements AssetBundle {
             package: attributedPackage,
             kind: assetKind,
             flavors: flavors,
+            platforms: platforms,
             transformers: transformers,
           ),
         );
@@ -1335,6 +1358,7 @@ class ManifestAssetBundle implements AssetBundle {
     Uri? originUri,
     AssetKind assetKind = AssetKind.regular,
     required Set<String> flavors,
+    required Set<String> platforms,
     required List<AssetTransformerEntry> transformers,
   }) {
     _ensureAssetPathIsValid(assetsBaseDir: assetsBaseDir, assetUri: assetUri);
@@ -1351,6 +1375,7 @@ class ManifestAssetBundle implements AssetBundle {
         assetKind: assetKind,
         originUri: originUri,
         flavors: flavors,
+        platforms: platforms,
         transformers: transformers,
       );
       if (packageAsset != null) {
@@ -1370,6 +1395,7 @@ class ManifestAssetBundle implements AssetBundle {
       originUri: originUri,
       kind: assetKind,
       flavors: flavors,
+      platforms: platforms,
       transformers: transformers,
     );
   }
@@ -1381,6 +1407,7 @@ class ManifestAssetBundle implements AssetBundle {
     AssetKind assetKind = AssetKind.regular,
     Uri? originUri,
     Set<String>? flavors,
+    Set<String>? platforms,
     List<AssetTransformerEntry>? transformers,
   }) {
     assert(assetUri.pathSegments.first == 'packages');
@@ -1397,6 +1424,7 @@ class ManifestAssetBundle implements AssetBundle {
           kind: assetKind,
           originUri: originUri,
           flavors: flavors,
+          platforms: platforms,
           transformers: transformers,
         );
       }
@@ -1420,9 +1448,11 @@ class _Asset {
     required this.package,
     this.kind = AssetKind.regular,
     Set<String>? flavors,
+    Set<String>? platforms,
     List<AssetTransformerEntry>? transformers,
   }) : originUri = originUri ?? entryUri,
        flavors = flavors ?? const <String>{},
+       platforms = platforms ?? const <String>{},
        transformers = transformers ?? const <AssetTransformerEntry>[];
 
   final String baseDir;
@@ -1444,6 +1474,8 @@ class _Asset {
 
   final Set<String> flavors;
 
+  final Set<String> platforms;
+
   final List<AssetTransformerEntry> transformers;
 
   File lookupAssetFile(FileSystem fileSystem) {
@@ -1472,11 +1504,20 @@ class _Asset {
     return flavors.contains(flavor);
   }
 
+  bool matchesPlatform(TargetPlatform targetPlatform) {
+    if (platforms.isEmpty || targetPlatform == TargetPlatform.tester) {
+      return true;
+    }
+
+    return platforms.contains(targetPlatform.osName);
+  }
+
   bool hasEquivalentFlavorsWith(_Asset other) {
-    final Set<String> assetFlavors = flavors.toSet();
-    final Set<String> otherFlavors = other.flavors.toSet();
-    return assetFlavors.length == otherFlavors.length &&
-        assetFlavors.every((String e) => otherFlavors.contains(e));
+    return setEquals(flavors, other.flavors);
+  }
+
+  bool hasEquivalentPlatformsWith(_Asset other) {
+    return setEquals(platforms, other.platforms);
   }
 
   @override
@@ -1495,11 +1536,13 @@ class _Asset {
         other.relativeUri == relativeUri &&
         other.entryUri == entryUri &&
         other.kind == kind &&
-        hasEquivalentFlavorsWith(other);
+        hasEquivalentFlavorsWith(other) &&
+        hasEquivalentPlatformsWith(other);
   }
 
   @override
-  int get hashCode => Object.hashAll(<Object>[baseDir, relativeUri, entryUri, kind, ...flavors]);
+  int get hashCode =>
+      Object.hashAll(<Object>[baseDir, relativeUri, entryUri, kind, ...flavors, ...platforms]);
 }
 
 // Given an assets directory like this:
diff --git a/packages/flutter_tools/lib/src/base/deferred_component.dart b/packages/flutter_tools/lib/src/base/deferred_component.dart
index 06d0c9f7c0d..1066f060d86 100644
--- a/packages/flutter_tools/lib/src/base/deferred_component.dart
+++ b/packages/flutter_tools/lib/src/base/deferred_component.dart
@@ -108,6 +108,9 @@ class DeferredComponent {
       if (asset.flavors.isNotEmpty) {
         out.write(' (flavors: ${asset.flavors.join(', ')})');
       }
+      if (asset.platforms.isNotEmpty) {
+        out.write(' (platforms: ${asset.platforms.join(', ')})');
+      }
     }
     return out.toString();
   }
diff --git a/packages/flutter_tools/lib/src/build_system/targets/assets.dart b/packages/flutter_tools/lib/src/build_system/targets/assets.dart
index be7cef81035..f9ebbae2045 100644
--- a/packages/flutter_tools/lib/src/build_system/targets/assets.dart
+++ b/packages/flutter_tools/lib/src/build_system/targets/assets.dart
@@ -269,7 +269,10 @@ class CopyAssets extends Target {
   List<String> get depfiles => const <String>['flutter_assets.d'];
 
   @override
-  Future<void> build(Environment environment) async {
+  Future<void> build(
+    Environment environment, {
+    TargetPlatform targetPlatform = TargetPlatform.android,
+  }) async {
     final String? buildModeEnvironment = environment.defines[kBuildMode];
     if (buildModeEnvironment == null) {
       throw MissingDefineException(kBuildMode, name);
@@ -282,7 +285,7 @@ class CopyAssets extends Target {
       environment,
       output,
       dartHookResult: dartHookResult,
-      targetPlatform: TargetPlatform.android,
+      targetPlatform: targetPlatform,
       buildMode: buildMode,
       flavor: environment.defines[kFlavor],
       additionalContent: <String, DevFSContent>{
diff --git a/packages/flutter_tools/lib/src/bundle_builder.dart b/packages/flutter_tools/lib/src/bundle_builder.dart
index 13d09c75c49..e343c884924 100644
--- a/packages/flutter_tools/lib/src/bundle_builder.dart
+++ b/packages/flutter_tools/lib/src/bundle_builder.dart
@@ -108,7 +108,7 @@ Future<AssetBundle?> buildAssets({
   required String manifestPath,
   String? assetDirPath,
   required String packageConfigPath,
-  TargetPlatform? targetPlatform,
+  required TargetPlatform targetPlatform,
   String? flavor,
 }) async {
   assetDirPath ??= getAssetBuildDirectory();
diff --git a/packages/flutter_tools/lib/src/commands/test.dart b/packages/flutter_tools/lib/src/commands/test.dart
index 6d59f4eb783..57562f6ac79 100644
--- a/packages/flutter_tools/lib/src/commands/test.dart
+++ b/packages/flutter_tools/lib/src/commands/test.dart
@@ -769,6 +769,7 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
       packageConfigPath: packageConfigPath,
       flavor: flavor,
       includeAssetsFromDevDependencies: true,
+      targetPlatform: TargetPlatform.tester,
     );
     if (build != 0) {
       throwToolExit('Error: Failed to build asset bundle');
diff --git a/packages/flutter_tools/lib/src/flutter_manifest.dart b/packages/flutter_tools/lib/src/flutter_manifest.dart
index 92e8fe61472..1d1ab6b8ff0 100644
--- a/packages/flutter_tools/lib/src/flutter_manifest.dart
+++ b/packages/flutter_tools/lib/src/flutter_manifest.dart
@@ -788,20 +788,23 @@ class AssetsEntry {
   const AssetsEntry({
     required this.uri,
     this.flavors = const <String>{},
+    this.platforms = const <String>{},
     this.transformers = const <AssetTransformerEntry>[],
   });
 
   final Uri uri;
   final Set<String> flavors;
+  final Set<String> platforms;
   final List<AssetTransformerEntry> transformers;
 
   Object? get descriptor {
-    if (transformers.isEmpty && flavors.isEmpty) {
+    if (transformers.isEmpty && flavors.isEmpty && platforms.isEmpty) {
       return uri.toString();
     }
     return <String, Object?>{
       _pathKey: uri.toString(),
       if (flavors.isNotEmpty) _flavorKey: flavors.toList(),
+      if (platforms.isNotEmpty) _platformsKey: platforms.toList(),
       if (transformers.isNotEmpty)
         _transformersKey: transformers.map((AssetTransformerEntry e) => e.descriptor).toList(),
     };
@@ -809,6 +812,7 @@ class AssetsEntry {
 
   static const _pathKey = 'path';
   static const _flavorKey = 'flavors';
+  static const _platformsKey = 'platforms';
   static const _transformersKey = 'transformers';
 
   static AssetsEntry? parseFromYaml(Object? yaml) {
@@ -856,11 +860,15 @@ class AssetsEntry {
       final (List<String>? flavors, List<String> flavorsErrors) = _parseFlavorsSection(
         yaml[_flavorKey],
       );
+      final (List<String>? platforms, List<String> platformsErrors) = _parsePlatformsSection(
+        yaml[_platformsKey],
+      );
       final (List<AssetTransformerEntry>? transformers, List<String> transformersErrors) =
           _parseTransformersSection(yaml[_transformersKey]);
 
       final errors = <String>[
         ...flavorsErrors.map((String e) => 'In $_flavorKey section of asset "$path": $e'),
+        ...platformsErrors.map((String e) => 'In $_platformsKey section of asset "$path": $e'),
         ...transformersErrors.map(
           (String e) => 'In $_transformersKey section of asset "$path": $e',
         ),
@@ -873,6 +881,7 @@ class AssetsEntry {
         AssetsEntry(
           uri: Uri(pathSegments: path.split('/')),
           flavors: Set<String>.from(flavors ?? <String>[]),
+          platforms: Set<String>.from(platforms ?? <String>[]),
           transformers: transformers ?? <AssetTransformerEntry>[],
         ),
         null,
@@ -894,6 +903,41 @@ class AssetsEntry {
     return _parseList<String>(yaml, _flavorKey, 'String');
   }
 
+  /// Parses and validates the "platforms" section of an asset entry in pubspec.yaml.
+  ///
+  /// Returns a tuple containing the parsed platforms list and any validation errors.
+  /// If errors are encountered, the platforms list will be null and errors will be non-empty.
+  static (List<String>? platforms, List<String> errors) _parsePlatformsSection(Object? yaml) {
+    if (yaml == null) {
+      return (null, <String>[]);
+    }
+
+    final (List<String>? platforms, List<String> errors) = _parseList<String>(
+      yaml,
+      _platformsKey,
+      'String',
+    );
+
+    if (errors.isNotEmpty) {
+      return (null, errors);
+    }
+
+    if (platforms != null) {
+      final Set<String> invalidPlatforms = platforms.toSet().difference(_kValidPluginPlatforms);
+
+      if (invalidPlatforms.isNotEmpty) {
+        return (
+          null,
+          <String>[
+            'Invalid platform(s): "${invalidPlatforms.join(", ")}". Supported platforms are: "${_kValidPluginPlatforms.join(", ")}".',
+          ],
+        );
+      }
+    }
+
+    return (platforms, errors);
+  }
+
   static (List<AssetTransformerEntry>?, List<String> errors) _parseTransformersSection(
     Object? yaml,
   ) {
@@ -934,18 +978,22 @@ class AssetsEntry {
       return false;
     }
 
-    return uri == other.uri && setEquals(flavors, other.flavors);
+    return uri == other.uri &&
+        setEquals(flavors, other.flavors) &&
+        setEquals(platforms, other.platforms);
   }
 
   @override
   int get hashCode => Object.hashAll(<Object?>[
     uri.hashCode,
     Object.hashAllUnordered(flavors),
+    Object.hashAllUnordered(platforms),
     Object.hashAll(transformers),
   ]);
 
   @override
-  String toString() => 'AssetsEntry(uri: $uri, flavors: $flavors, transformers: $transformers)';
+  String toString() =>
+      'AssetsEntry(uri: $uri, flavors: $flavors, platforms: $platforms, transformers: $transformers)';
 }
 
 /// Represents an entry in the "transformers" section of an asset.
diff --git a/packages/flutter_tools/lib/src/run_hot.dart b/packages/flutter_tools/lib/src/run_hot.dart
index b22c97e42d0..eb2bbece0a0 100644
--- a/packages/flutter_tools/lib/src/run_hot.dart
+++ b/packages/flutter_tools/lib/src/run_hot.dart
@@ -499,6 +499,7 @@ class HotRunner extends ResidentRunner {
         ),
         packageConfigPath: debuggingOptions.buildInfo.packageConfigPath,
         flavor: debuggingOptions.buildInfo.flavor,
+        targetPlatform: targetPlatform,
       );
       if (result != 0) {
         return UpdateFSReport();
diff --git a/packages/flutter_tools/lib/src/widget_preview/preview_pubspec_builder.dart b/packages/flutter_tools/lib/src/widget_preview/preview_pubspec_builder.dart
index 082f875f3c5..3e8d3689857 100644
--- a/packages/flutter_tools/lib/src/widget_preview/preview_pubspec_builder.dart
+++ b/packages/flutter_tools/lib/src/widget_preview/preview_pubspec_builder.dart
@@ -76,6 +76,7 @@ class PreviewPubspecBuilder {
     return AssetsEntry(
       uri: transformAssetUri(asset.uri),
       flavors: asset.flavors,
+      platforms: asset.platforms,
       transformers: asset.transformers,
     );
   }
diff --git a/packages/flutter_tools/test/general.shard/asset_bundle_flavors_test.dart b/packages/flutter_tools/test/general.shard/asset_bundle_flavors_test.dart
index 93dd92594ff..ac44f4319ad 100644
--- a/packages/flutter_tools/test/general.shard/asset_bundle_flavors_test.dart
+++ b/packages/flutter_tools/test/general.shard/asset_bundle_flavors_test.dart
@@ -8,6 +8,7 @@ import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/user_messages.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/cache.dart';
 import 'package:flutter_tools/src/project.dart';
 
@@ -37,6 +38,7 @@ void main() {
       packageConfigPath: '.dart_tool/package_config.json',
       flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
       flavor: flavor,
+      targetPlatform: TargetPlatform.tester,
     );
     return bundle;
   }
diff --git a/packages/flutter_tools/test/general.shard/asset_bundle_package_fonts_test.dart b/packages/flutter_tools/test/general.shard/asset_bundle_package_fonts_test.dart
index edac9897a97..e4f3c165477 100644
--- a/packages/flutter_tools/test/general.shard/asset_bundle_package_fonts_test.dart
+++ b/packages/flutter_tools/test/general.shard/asset_bundle_package_fonts_test.dart
@@ -9,6 +9,7 @@ import 'package:file/memory.dart';
 
 import 'package:flutter_tools/src/asset.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/build_info.dart';
 
 import 'package:flutter_tools/src/globals.dart' as globals;
 
@@ -62,7 +63,10 @@ $fontsSection
     String expectedAssetManifest,
   ) async {
     final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-    await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+    await bundle.build(
+      packageConfigPath: '.dart_tool/package_config.json',
+      targetPlatform: TargetPlatform.tester,
+    );
 
     for (final packageName in packages) {
       for (final packageFont in packageFonts) {
@@ -114,7 +118,10 @@ $fontsSection
         writePubspecFile('p/p/pubspec.yaml', 'test_package');
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>['AssetManifest.bin', 'FontManifest.json', 'NOTICES.Z']),
diff --git a/packages/flutter_tools/test/general.shard/asset_bundle_package_test.dart b/packages/flutter_tools/test/general.shard/asset_bundle_package_test.dart
index 16157b0a56d..c800e0d0027 100644
--- a/packages/flutter_tools/test/general.shard/asset_bundle_package_test.dart
+++ b/packages/flutter_tools/test/general.shard/asset_bundle_package_test.dart
@@ -10,6 +10,7 @@ import 'package:file/memory.dart';
 
 import 'package:flutter_tools/src/asset.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/build_info.dart';
 
 import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:standard_message_codec/standard_message_codec.dart';
@@ -83,7 +84,11 @@ $assetsSection
     String? flavor,
   }) async {
     final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-    await bundle.build(packageConfigPath: '.dart_tool/package_config.json', flavor: flavor);
+    await bundle.build(
+      packageConfigPath: '.dart_tool/package_config.json',
+      flavor: flavor,
+      targetPlatform: TargetPlatform.tester,
+    );
 
     for (final packageName in packages) {
       for (final asset in assets) {
@@ -138,7 +143,10 @@ $assetsSection
         writePubspecFile('p/p/pubspec.yaml', 'test_package');
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>['NOTICES.Z', 'AssetManifest.bin', 'FontManifest.json']),
@@ -166,7 +174,10 @@ $assetsSection
         writeAssets('p/p/', assets);
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>['NOTICES.Z', 'AssetManifest.bin', 'FontManifest.json']),
@@ -665,7 +676,10 @@ $assetsSection
         writeAssets('p/p/', assetsOnDisk);
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
 
         expect(
           bundle.entries['AssetManifest.bin'],
@@ -754,7 +768,10 @@ $assetsSection
         writePubspecFile('p/p/pubspec.yaml', 'test_package', assets: assetOnManifest);
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
       },
       overrides: <Type, Generator>{
         FileSystem: () => testFileSystem,
diff --git a/packages/flutter_tools/test/general.shard/asset_bundle_test.dart b/packages/flutter_tools/test/general.shard/asset_bundle_test.dart
index fcb8031c4be..3ea4e5b4c53 100644
--- a/packages/flutter_tools/test/general.shard/asset_bundle_test.dart
+++ b/packages/flutter_tools/test/general.shard/asset_bundle_test.dart
@@ -44,7 +44,13 @@ void main() {
       'nonempty',
       () async {
         final AssetBundle ab = AssetBundleFactory.instance.createBundle();
-        expect(await ab.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+        expect(
+          await ab.build(
+            packageConfigPath: '.dart_tool/package_config.json',
+            targetPlatform: TargetPlatform.tester,
+          ),
+          0,
+        );
         expect(ab.entries.length, greaterThan(0));
       },
       overrides: <Type, Generator>{
@@ -62,7 +68,10 @@ void main() {
           ..writeAsStringSync('');
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(bundle.entries.keys, unorderedEquals(<String>['AssetManifest.bin']));
         const expectedBinAssetManifest = <Object, Object>{};
         expect(
@@ -109,7 +118,10 @@ flutter:
         }
 
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
 
         expect(
           bundle.entries.keys,
@@ -149,7 +161,10 @@ flutter:
     - assets/foo/
 ''');
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>[
@@ -165,7 +180,10 @@ flutter:
           ..setLastModifiedSync(packageFile.lastModifiedSync().add(const Duration(hours: 1)));
 
         expect(bundle.needsBuild(), true);
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>[
@@ -203,7 +221,10 @@ flutter:
           mainLibName: 'my_app',
         );
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>[
@@ -231,7 +252,10 @@ name: my_app''')
         // asset manifest and not updated. This is due to the devfs not
         // supporting file deletion.
         expect(bundle.needsBuild(), true);
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>[
@@ -269,7 +293,10 @@ flutter:
 ''');
         writePackageConfigFiles(directory: globals.fs.currentDirectory, mainLibName: 'my_app');
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>[
@@ -323,6 +350,7 @@ flutter:
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           deferredComponentsEnabled: true,
+          targetPlatform: TargetPlatform.tester,
         );
         expect(
           bundle.entries.keys,
@@ -371,7 +399,10 @@ flutter:
         - assets/wild/
 ''');
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-        await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        );
         expect(
           bundle.entries.keys,
           unorderedEquals(<String>[
@@ -431,6 +462,7 @@ flutter:
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           deferredComponentsEnabled: true,
+          targetPlatform: TargetPlatform.tester,
         );
         expect(
           bundle.entries.keys,
@@ -454,6 +486,7 @@ flutter:
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           deferredComponentsEnabled: true,
+          targetPlatform: TargetPlatform.tester,
         );
 
         expect(
@@ -507,6 +540,7 @@ flutter:
         () => bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         ),
         throwsToolExit(
           message:
@@ -546,6 +580,7 @@ flutter:
         () => bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         ),
         throwsToolExit(
           message:
@@ -590,6 +625,7 @@ flutter:
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
 
         expect(bundle.entries['my-asset.txt']!.content.isModified, isTrue);
@@ -597,6 +633,7 @@ flutter:
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
 
         expect(bundle.entries['my-asset.txt']!.content.isModified, isFalse);
@@ -614,6 +651,7 @@ flutter:
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
 
         expect(bundle.entries['my-asset.txt']!.content.isModified, isTrue);
@@ -762,12 +800,18 @@ assets:
   - assets/foo/bar.txt
 ''');
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
-      await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+      await bundle.build(
+        packageConfigPath: '.dart_tool/package_config.json',
+        targetPlatform: TargetPlatform.tester,
+      );
 
       final AssetBundleEntry? fontManifest = bundle.entries['FontManifest.json'];
       final AssetBundleEntry? license = bundle.entries['NOTICES'];
 
-      await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+      await bundle.build(
+        packageConfigPath: '.dart_tool/package_config.json',
+        targetPlatform: TargetPlatform.tester,
+      );
 
       expect(fontManifest, bundle.entries['FontManifest.json']);
       expect(license, bundle.entries['NOTICES']);
@@ -795,7 +839,13 @@ flutter:
 ''');
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        0,
+      );
       expect(
         bundle.additionalDependencies.single.path,
         contains('DOES_NOT_EXIST_RERUN_FOR_WILDCARD'),
@@ -824,7 +874,13 @@ flutter:
 ''');
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        0,
+      );
       expect(bundle.additionalDependencies, isEmpty);
     },
     overrides: <Type, Generator>{
@@ -871,7 +927,13 @@ flutter:
   ''');
         final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-        expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+        expect(
+          await bundle.build(
+            packageConfigPath: '.dart_tool/package_config.json',
+            targetPlatform: TargetPlatform.tester,
+          ),
+          0,
+        );
 
         await writeBundle(
           output,
@@ -1097,7 +1159,13 @@ flutter:
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
       globals.fs.file('foo/bar/fizz.txt').createSync(recursive: true);
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        0,
+      );
       expect(bundle.additionalDependencies, isEmpty);
     },
     overrides: <Type, Generator>{
@@ -1135,7 +1203,10 @@ flutter:
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
       globals.fs.file('foo/bar/fizz.txt').createSync(recursive: true);
 
-      await bundle.build(packageConfigPath: '.dart_tool/package_config.json');
+      await bundle.build(
+        packageConfigPath: '.dart_tool/package_config.json',
+        targetPlatform: TargetPlatform.tester,
+      );
 
       expect(
         bundle.entries.keys,
@@ -1188,7 +1259,13 @@ flutter:
 ''');
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 1);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        1,
+      );
       expect(testLogger.errorText, contains('This asset was included from package foo'));
     },
     overrides: <Type, Generator>{
@@ -1217,7 +1294,13 @@ flutter:
 ''');
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 1);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        1,
+      );
       expect(testLogger.errorText, isNot(contains('This asset was included from')));
     },
     overrides: <Type, Generator>{
@@ -1256,7 +1339,13 @@ flutter:
 ''');
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        0,
+      );
       expect((bundle.entries['FontManifest.json']!.content as DevFSStringContent).string, '[]');
       expect(testLogger.errorText, contains('package:foo has `uses-material-design: true` set'));
     },
@@ -1292,7 +1381,13 @@ flutter:
 
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        0,
+      );
       expect(
         bundle.entries.keys,
         unorderedEquals(<String>[
@@ -1336,7 +1431,13 @@ flutter:
       globals.fs.file('assets/zebra.jpg').createSync();
       final AssetBundle bundle = AssetBundleFactory.instance.createBundle();
 
-      expect(await bundle.build(packageConfigPath: '.dart_tool/package_config.json'), 0);
+      expect(
+        await bundle.build(
+          packageConfigPath: '.dart_tool/package_config.json',
+          targetPlatform: TargetPlatform.tester,
+        ),
+        0,
+      );
       expect((bundle.entries['FontManifest.json']!.content as DevFSStringContent).string, '[]');
     },
     overrides: <Type, Generator>{
@@ -1375,6 +1476,7 @@ flutter:
         () => bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         ),
         throwsToolExit(
           message:
diff --git a/packages/flutter_tools/test/general.shard/asset_bundle_variant_test.dart b/packages/flutter_tools/test/general.shard/asset_bundle_variant_test.dart
index af682ba587e..91f24c632dc 100644
--- a/packages/flutter_tools/test/general.shard/asset_bundle_variant_test.dart
+++ b/packages/flutter_tools/test/general.shard/asset_bundle_variant_test.dart
@@ -12,6 +12,7 @@ import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/user_messages.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/cache.dart';
 
 import 'package:flutter_tools/src/project.dart';
@@ -86,6 +87,7 @@ ${assets.map((String entry) => '    - $entry').join('\n')}
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fs.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
 
         final Map<Object?, Object?> smcBinManifest = await extractAssetManifestSmcBinFromBundle(
@@ -133,6 +135,7 @@ ${assets.map((String entry) => '    - $entry').join('\n')}
         await bundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fs.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
 
         final Map<Object?, Object?> smcBinManifest = await extractAssetManifestSmcBinFromBundle(
@@ -176,6 +179,7 @@ ${assets.map((String entry) => '    - $entry').join('\n')}
       await bundle.build(
         packageConfigPath: '.dart_tool/package_config.json',
         flutterProject: FlutterProject.fromDirectoryTest(fs.currentDirectory),
+        targetPlatform: TargetPlatform.tester,
       );
 
       final Map<Object?, Object?> smcBinManifest = await extractAssetManifestSmcBinFromBundle(
@@ -215,6 +219,7 @@ ${assets.map((String entry) => '    - $entry').join('\n')}
       await bundle.build(
         packageConfigPath: '.dart_tool/package_config.json',
         flutterProject: FlutterProject.fromDirectoryTest(fs.currentDirectory),
+        targetPlatform: TargetPlatform.tester,
       );
 
       final expectedManifest = <String, List<Map<String, Object>>>{
@@ -282,6 +287,7 @@ flutter:
       await bundle.build(
         packageConfigPath: '.dart_tool/package_config.json',
         flutterProject: FlutterProject.fromDirectoryTest(fs.currentDirectory),
+        targetPlatform: TargetPlatform.tester,
       );
 
       final expectedAssetManifest = <String, List<Map<String, Object>>>{
diff --git a/packages/flutter_tools/test/general.shard/asset_test.dart b/packages/flutter_tools/test/general.shard/asset_test.dart
index 5659c430f50..0f324853abd 100644
--- a/packages/flutter_tools/test/general.shard/asset_test.dart
+++ b/packages/flutter_tools/test/general.shard/asset_test.dart
@@ -96,6 +96,7 @@ dependencies:
           packageConfigPath: packageConfigPath,
           manifestPath: manifestPath,
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.directory('main')),
+          targetPlatform: TargetPlatform.tester,
         );
 
         expect(assetBundle.entries, contains('FontManifest.json'));
@@ -254,6 +255,7 @@ flutter:
             packageConfigPath: packageConfigPath,
             manifestPath: manifestPath,
             flutterProject: FlutterProject.fromDirectoryTest(fileSystem.directory('main')),
+            targetPlatform: TargetPlatform.tester,
           );
 
           expect(assetBundle.entries, contains('FontManifest.json'));
@@ -298,6 +300,7 @@ flutter:
           manifestPath: manifestPath, // file doesn't exist
           packageConfigPath: packageConfigPath,
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.file(manifestPath).parent),
+          targetPlatform: TargetPlatform.tester,
         );
 
         expect(assetBundle.wasBuiltOnce(), true);
@@ -397,6 +400,7 @@ flutter:
         final int result = await assetBundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
         expect(result, isNot(0));
         expect(
@@ -426,6 +430,7 @@ flutter:
         final int result = await assetBundle.build(
           packageConfigPath: '.dart_tool/package_config.json',
           flutterProject: FlutterProject.fromDirectoryTest(fileSystem.currentDirectory),
+          targetPlatform: TargetPlatform.tester,
         );
         expect(result, isNot(0));
         expect(
diff --git a/packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart b/packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart
index b8b22a81eef..cf55efed9e3 100644
--- a/packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart
+++ b/packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart
@@ -461,6 +461,161 @@ flutter:
     },
   );
 
+  group('platform-specific assets', () {
+    /// All supported platforms that should be validated.
+    const kValidPluginPlatforms = <String>{'android', 'ios', 'web', 'windows', 'linux', 'macos'};
+
+    TargetPlatform targetFor(String platform) =>
+        TargetPlatform.values.firstWhere((p) => p.osName == platform);
+
+    /// Writes a `pubspec.yaml` with an asset, optionally restricted to
+    /// certain [platforms], then runs the build for [targetPlatform] and
+    /// returns whether the asset was bundled.
+    ///
+    /// This helper reflects how Flutter decides which assets to include
+    /// depending on the `platforms:` key in `pubspec.yaml`.
+    Future<bool> setupAndBuildPlatformAsset(String platform, TargetPlatform targetPlatform) async {
+      final filePath = 'assets/test-$platform.txt';
+
+      final pubspec = platform.isEmpty
+          ? '''
+name: example
+flutter:
+  assets:
+    - path: $filePath
+'''
+          : '''
+name: example
+flutter:
+  assets:
+    - path: $filePath
+      platforms:
+        - $platform
+''';
+
+      fileSystem.file('pubspec.yaml')
+        ..createSync()
+        ..writeAsStringSync(pubspec);
+      writePackageConfigFiles(directory: globals.fs.currentDirectory, mainLibName: 'example');
+      fileSystem.file(filePath).createSync(recursive: true);
+
+      await const CopyAssets().build(environment, targetPlatform: targetPlatform);
+
+      final File file = fileSystem.file('${environment.buildDir.path}/flutter_assets/$filePath');
+      return file.existsSync();
+    }
+
+    group('includes assets only for matching platform', () {
+      for (final platform in kValidPluginPlatforms) {
+        testUsingContext(
+          platform,
+          () async {
+            final TargetPlatform targetPlatform = targetFor(platform);
+            final bool didInclude = await setupAndBuildPlatformAsset(platform, targetPlatform);
+
+            expect(didInclude, isTrue, reason: 'Expected asset for $platform to be included');
+          },
+          overrides: <Type, Generator>{
+            FileSystem: () => fileSystem,
+            ProcessManager: () => FakeProcessManager.any(),
+          },
+        );
+      }
+    });
+
+    group('skips assets for non-matching platform', () {
+      for (final platform in kValidPluginPlatforms) {
+        testUsingContext(
+          platform,
+          () async {
+            final TargetPlatform targetPlatform = platform == 'android'
+                ? TargetPlatform.ios
+                : TargetPlatform.android;
+            final bool didInclude = await setupAndBuildPlatformAsset(platform, targetPlatform);
+
+            expect(
+              didInclude,
+              isFalse,
+              reason: 'Expected asset for $platform to be skipped when target is $targetPlatform',
+            );
+          },
+          overrides: <Type, Generator>{
+            FileSystem: () => fileSystem,
+            ProcessManager: () => FakeProcessManager.any(),
+          },
+        );
+      }
+    });
+
+    group('includes assets for all platforms when no restriction is set', () {
+      for (final platform in kValidPluginPlatforms) {
+        testUsingContext(
+          platform,
+          () async {
+            final TargetPlatform targetPlatform = targetFor(platform);
+            final bool didInclude = await setupAndBuildPlatformAsset('', targetPlatform);
+
+            expect(
+              didInclude,
+              isTrue,
+              reason:
+                  'Expected asset to be included for all platforms when no platforms are specified (platform: $platform)',
+            );
+          },
+          overrides: <Type, Generator>{
+            FileSystem: () => fileSystem,
+            ProcessManager: () => FakeProcessManager.any(),
+          },
+        );
+      }
+    });
+
+    group('includes assets only for declared multiple platforms', () {
+      for (final platform in kValidPluginPlatforms) {
+        testUsingContext(
+          platform,
+          () async {
+            const filePath = 'assets/test-multi.txt';
+            final targetPlatforms = <String>['android', 'ios'];
+
+            fileSystem.file('pubspec.yaml')
+              ..createSync()
+              ..writeAsStringSync('''
+name: example
+flutter:
+  assets:
+    - path: $filePath
+      platforms: [${targetPlatforms.join(',')}]
+''');
+
+            writePackageConfigFiles(directory: globals.fs.currentDirectory, mainLibName: 'example');
+            fileSystem.file(filePath).createSync(recursive: true);
+
+            final TargetPlatform targetPlatform = targetFor(platform);
+
+            await const CopyAssets().build(environment, targetPlatform: targetPlatform);
+
+            final File bundledFile = fileSystem.file(
+              '${environment.buildDir.path}/flutter_assets/$filePath',
+            );
+
+            final bool exists = bundledFile.existsSync();
+
+            if (targetPlatforms.contains(platform)) {
+              expect(exists, isTrue, reason: 'Expected asset to be included for $platform');
+            } else {
+              expect(exists, isFalse, reason: 'Expected asset to be skipped for $platform');
+            }
+          },
+          overrides: <Type, Generator>{
+            FileSystem: () => fileSystem,
+            ProcessManager: () => FakeProcessManager.any(),
+          },
+        );
+      }
+    });
+  });
+
   testUsingContext(
     'Uses processors~/2 to transform assets',
     () async {
diff --git a/packages/flutter_tools/test/general.shard/flutter_manifest_test.dart b/packages/flutter_tools/test/general.shard/flutter_manifest_test.dart
index 1b98f149bb7..3e39438e0ac 100644
--- a/packages/flutter_tools/test/general.shard/flutter_manifest_test.dart
+++ b/packages/flutter_tools/test/general.shard/flutter_manifest_test.dart
@@ -1516,6 +1516,74 @@ flutter:
     expect(logger.errorText, 'Expected "default-flavor" to be a string, but got 3 (int).\n');
   });
 
+  testWithoutContext('FlutterManifest parses asset with platforms', () async {
+    const manifest = '''
+name: test
+dependencies:
+  flutter:
+    sdk: flutter
+flutter:
+  assets:
+    - path: assets/test.png
+      platforms:
+        - web
+        - android
+''';
+
+    final FlutterManifest flutterManifest = FlutterManifest.createFromString(
+      manifest,
+      logger: logger,
+    )!;
+
+    expect(flutterManifest.assets, hasLength(1));
+    final AssetsEntry entry = flutterManifest.assets.single;
+    expect(entry.uri.path, 'assets/test.png');
+    expect(entry.platforms, containsAll(<String>['web', 'android']));
+  });
+
+  testWithoutContext(
+    'FlutterManifest fails when platforms contains invalid platform name',
+    () async {
+      const manifest = '''
+name: test
+flutter:
+  assets:
+    - path: assets/test.png
+      platforms:
+        - toasterOS
+        - windows
+''';
+
+      final FlutterManifest? flutterManifest = FlutterManifest.createFromString(
+        manifest,
+        logger: logger,
+      );
+
+      expect(flutterManifest, isNull);
+      expect(logger.errorText, contains('Invalid platform'));
+    },
+  );
+
+  testWithoutContext('FlutterManifest supports empty platforms list', () async {
+    const manifest = '''
+name: test
+flutter:
+  assets:
+    - path: assets/test.png
+      platforms: []
+''';
+
+    final FlutterManifest flutterManifest = FlutterManifest.createFromString(
+      manifest,
+      logger: logger,
+    )!;
+
+    expect(flutterManifest.assets, hasLength(1));
+    final AssetsEntry entry = flutterManifest.assets.single;
+    expect(entry.uri.path, 'assets/test.png');
+    expect(entry.platforms, isEmpty);
+  });
+
   testWithoutContext('FlutterManifest.copyWith generates a valid manifest', () async {
     const manifest = '''
 name: test
@@ -1536,6 +1604,7 @@ flutter:
         AssetsEntry(
           uri: Uri(path: 'foo'),
           flavors: const <String>{'flavor'},
+          platforms: const <String>{'web', 'android', 'ios'},
           transformers: const <AssetTransformerEntry>[
             AssetTransformerEntry(package: 'package:foo', args: <String>['arg']),
           ],
@@ -1555,6 +1624,7 @@ flutter:
             AssetsEntry(
               uri: Uri(path: 'deferredComponentUri'),
               flavors: const <String>{'deferredComponentFlavor'},
+              platforms: const <String>{'macos'},
               transformers: const <AssetTransformerEntry>[
                 AssetTransformerEntry(
                   package: 'package:deferredComponent',
@@ -1578,6 +1648,10 @@ flutter:
     - path: foo
       flavors:
         - flavor
+      platforms:
+        - web
+        - android
+        - ios
       transformers:
         - package: package:foo
           args:
@@ -1598,6 +1672,8 @@ flutter:
         - path: deferredComponentUri
           flavors:
             - deferredComponentFlavor
+          platforms:
+            - macos
           transformers:
             - package: package:deferredComponent
               args: