diff --git a/scripts/setupFixtures.mjs b/scripts/setupFixtures.mjs
index d82dccd..9995e5c 100644
--- a/scripts/setupFixtures.mjs
+++ b/scripts/setupFixtures.mjs
@@ -1,6 +1,7 @@
 import path from "path"
 import { glob } from "glob"
 import { execSync } from "child_process"
+import fs from "fs"
 
 const fixtures = await glob("test/fixtures/**/package.json", { ignore: "**/**/node_modules/**" })
 
@@ -10,4 +11,15 @@ fixtures.forEach(async fixturesPath => {
   console.log(`Installing packages for fixture: ${fixtureFolder}`)
 
   execSync(`cd ${fixtureFolder} && yarn install && cd -`)
+
+  if (fixtureFolder.endsWith("symfony-asset-mapper")) {
+    const mockPackagePath = path.join(fixtureFolder, "node_modules", "@symfony", "stimulus-bundle")
+    fs.mkdirSync(mockPackagePath, { recursive: true })
+    fs.writeFileSync(path.join(mockPackagePath, "package.json"), JSON.stringify({
+      name: "@symfony/stimulus-bundle",
+      version: "3.2.0",
+      main: "loader.js"
+    }, null, 2))
+    fs.writeFileSync(path.join(mockPackagePath, "loader.js"), "export function startStimulusApp() { return {} }\n")
+  }
 })
diff --git a/src/controllers_index_file.ts b/src/controllers_index_file.ts
index d89cc27..66411af 100644
--- a/src/controllers_index_file.ts
+++ b/src/controllers_index_file.ts
@@ -44,6 +44,57 @@ export class ControllersIndexFile {
     await this.analyzeEsbuildRails()
     await this.analyzeStimulusViteHelpers()
     await this.analyzeStimulusWebpackHelpers()
+    await this.analyzeSymfonyStimulusBridge()
+  }
+
+  async analyzeSymfonyStimulusBridge() {
+    const hasStimulusBridge = await hasDepedency(this.project.projectPath, "@symfony/stimulus-bridge")
+    const isAssetMapper = this.project.isAssetMapper
+    const hasStimulusBundle = this.sourceFile.hasStimulusBundleImport
+
+    if (!hasStimulusBridge && !isAssetMapper && !hasStimulusBundle) return
+
+    let controllerRoot = ""
+
+    walk(this.sourceFile.ast, {
+      CallExpression: node => {
+        if (node.callee.type !== "Identifier" || node.callee.name !== "startStimulusApp") return
+
+        const [contextNode] = node.arguments.slice(0, 1)
+
+        if (contextNode && contextNode.type === "CallExpression" &&
+            contextNode.callee.type === "MemberExpression" &&
+            contextNode.callee.object.type === "Identifier" &&
+            contextNode.callee.property.type === "Identifier" &&
+            contextNode.callee.object.name === "require" &&
+            contextNode.callee.property.name === "context" &&
+            contextNode.arguments.length >= 1) {
+
+          const pathNode = contextNode.arguments[0]
+          if (pathNode.type !== "Literal") return
+
+          const requirePath = pathNode.value as string
+          if (!requirePath) return
+
+          const lazyLoaderPrefix = "@symfony/stimulus-bridge/lazy-controller-loader!"
+          if (!requirePath.startsWith(lazyLoaderPrefix)) return
+
+          const relativePath = requirePath.slice(lazyLoaderPrefix.length)
+          const thisFileDir = path.dirname(this.sourceFile.path)
+          controllerRoot = path.join(thisFileDir, relativePath)
+        } else if ((isAssetMapper || hasStimulusBundle) && !contextNode) {
+          const thisFileDir = path.dirname(this.sourceFile.path)
+          controllerRoot = path.join(thisFileDir, "controllers")
+        }
+      }
+    })
+
+    if (controllerRoot) {
+      const relativeControllerRoot = this.project.relativePath(controllerRoot)
+      this.project._controllerRoots.add(relativeControllerRoot)
+      const controllersGlob = path.join(controllerRoot, `**/*.{${this.project.extensionsGlob}}`)
+      await this.evaluateControllerGlob(relativeControllerRoot, controllersGlob, "stimulus-loading-lazy")
+    }
   }
 
   analyzeApplicationRegisterCalls() {
diff --git a/src/packages.ts b/src/packages.ts
index 305f986..7cb1d9f 100644
--- a/src/packages.ts
+++ b/src/packages.ts
@@ -8,6 +8,8 @@ import { findNodeModulesPath, parsePackageJSON, nodeModuleForPackageJSONPath, ha
 export const helperPackages = [
   "@hotwired/stimulus-loading",
   "@hotwired/stimulus-webpack-helpers",
+  "@symfony/stimulus-bridge",
+  "@symfony/stimulus-bundle",
   "bun-stimulus-plugin",
   "esbuild-plugin-stimulus",
   "stimulus-vite-helpers",
diff --git a/src/project.ts b/src/project.ts
index 7236eda..4a221f3 100644
--- a/src/project.ts
+++ b/src/project.ts
@@ -1,3 +1,6 @@
+import path from "path"
+import { existsSync } from "fs"
+
 import { glob } from "glob"
 
 import { ApplicationFile } from "./application_file"
@@ -34,6 +37,17 @@ export class Project {
     this.projectPath = projectPath
   }
 
+  private _isAssetMapper?: boolean
+
+  get isAssetMapper(): boolean {
+    if (this._isAssetMapper !== undefined) return this._isAssetMapper
+    const importmapPath = path.join(this.projectPath, "importmap.php")
+    const stimulusConfigPath = path.join(this.projectPath, "config", "packages", "stimulus.yaml")
+    this._isAssetMapper = existsSync(importmapPath) || existsSync(stimulusConfigPath)
+
+    return this._isAssetMapper
+  }
+
   relativePath(path: string) {
     return path.replace(`${this.projectPath}/`, "")
   }
diff --git a/src/source_file.ts b/src/source_file.ts
index fd08455..7439188 100644
--- a/src/source_file.ts
+++ b/src/source_file.ts
@@ -93,6 +93,8 @@ export class SourceFile {
   }
 
   get hasResolvedStimulusApplicationFileImport() {
+    if (!this.project.applicationFile) return false
+
     return !!this.importDeclarations.find(declaration => this.project.applicationFile?.path === declaration.resolvedRelativePath)
   }
 
@@ -100,9 +102,14 @@ export class SourceFile {
     return this.importDeclarations.some(declaration => helperPackages.includes(declaration.source))
   }
 
+  get hasStimulusBundleImport() {
+    return this.importDeclarations.some(declaration => declaration.source === "@symfony/stimulus-bundle")
+  }
+
   get isStimulusControllersIndex() {
     if (this.hasHelperPackage) return true
     if (this.hasResolvedStimulusApplicationFileImport) return true
+    if (this.hasStimulusBundleImport && this.project.isAssetMapper) return true
 
     return false
   }
diff --git a/test/fixtures/symfony-asset-mapper/assets/bootstrap.js b/test/fixtures/symfony-asset-mapper/assets/bootstrap.js
new file mode 100644
index 0000000..e3f76d4
--- /dev/null
+++ b/test/fixtures/symfony-asset-mapper/assets/bootstrap.js
@@ -0,0 +1,3 @@
+import { startStimulusApp } from '@symfony/stimulus-bundle'
+
+const app = startStimulusApp()
diff --git a/test/fixtures/symfony-asset-mapper/assets/controllers/hello_controller.js b/test/fixtures/symfony-asset-mapper/assets/controllers/hello_controller.js
new file mode 100644
index 0000000..cb8d421
--- /dev/null
+++ b/test/fixtures/symfony-asset-mapper/assets/controllers/hello_controller.js
@@ -0,0 +1,9 @@
+import { Controller } from '@hotwired/stimulus'
+
+export default class extends Controller {
+    static targets = ['output']
+
+    connect() {
+        console.log('Hello!')
+    }
+}
diff --git a/test/fixtures/symfony-asset-mapper/package.json b/test/fixtures/symfony-asset-mapper/package.json
new file mode 100644
index 0000000..3938ab1
--- /dev/null
+++ b/test/fixtures/symfony-asset-mapper/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "test-symfony-asset-mapper",
+  "dependencies": {
+    "@hotwired/stimulus": "^3.2.0"
+  }
+}
diff --git a/test/fixtures/symfony-asset-mapper/yarn.lock b/test/fixtures/symfony-asset-mapper/yarn.lock
new file mode 100644
index 0000000..2e71b75
--- /dev/null
+++ b/test/fixtures/symfony-asset-mapper/yarn.lock
@@ -0,0 +1,8 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@hotwired/stimulus@^3.2.0":
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/@hotwired/stimulus/-/stimulus-3.2.2.tgz#071aab59c600fed95b97939e605ff261a4251608"
+  integrity sha512-eGeIqNOQpXoPAIP7tC1+1Yc1yl1xnwYqg+3mzqxyrbE5pg5YFBZcA6YoTiByJB6DKAEsiWtl6tjTJS4IYtbB7A==
diff --git a/test/fixtures/symfony-stimulus-bridge/assets/bootstrap.js b/test/fixtures/symfony-stimulus-bridge/assets/bootstrap.js
new file mode 100644
index 0000000..666065f
--- /dev/null
+++ b/test/fixtures/symfony-stimulus-bridge/assets/bootstrap.js
@@ -0,0 +1,7 @@
+import { startStimulusApp } from '@symfony/stimulus-bridge'
+
+export const app = startStimulusApp(require.context(
+    '@symfony/stimulus-bridge/lazy-controller-loader!./controllers',
+    true,
+    /\.[jt]sx?$/
+))
diff --git a/test/fixtures/symfony-stimulus-bridge/assets/controllers/hello-controller.js b/test/fixtures/symfony-stimulus-bridge/assets/controllers/hello-controller.js
new file mode 100644
index 0000000..cb8d421
--- /dev/null
+++ b/test/fixtures/symfony-stimulus-bridge/assets/controllers/hello-controller.js
@@ -0,0 +1,9 @@
+import { Controller } from '@hotwired/stimulus'
+
+export default class extends Controller {
+    static targets = ['output']
+
+    connect() {
+        console.log('Hello!')
+    }
+}
diff --git a/test/fixtures/symfony-stimulus-bridge/package.json b/test/fixtures/symfony-stimulus-bridge/package.json
new file mode 100644
index 0000000..dbccd53
--- /dev/null
+++ b/test/fixtures/symfony-stimulus-bridge/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "test-symfony-stimulus-bridge",
+  "dependencies": {
+    "@hotwired/stimulus": "^3.2.0",
+    "@symfony/stimulus-bridge": "^3.2.0"
+  }
+}
diff --git a/test/fixtures/symfony-stimulus-bridge/yarn.lock b/test/fixtures/symfony-stimulus-bridge/yarn.lock
new file mode 100644
index 0000000..67a3b47
--- /dev/null
+++ b/test/fixtures/symfony-stimulus-bridge/yarn.lock
@@ -0,0 +1,114 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@hotwired/stimulus-webpack-helpers@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@hotwired/stimulus-webpack-helpers/-/stimulus-webpack-helpers-1.0.1.tgz#4cd74487adeca576c9865ac2b9fe5cb20cef16dd"
+  integrity sha512-wa/zupVG0eWxRYJjC1IiPBdt3Lruv0RqGN+/DTMmUWUyMAEB27KXmVY6a8YpUVTM7QwVuaLNGW4EqDgrS2upXQ==
+
+"@hotwired/stimulus@^3.2.0":
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/@hotwired/stimulus/-/stimulus-3.2.2.tgz#071aab59c600fed95b97939e605ff261a4251608"
+  integrity sha512-eGeIqNOQpXoPAIP7tC1+1Yc1yl1xnwYqg+3mzqxyrbE5pg5YFBZcA6YoTiByJB6DKAEsiWtl6tjTJS4IYtbB7A==
+
+"@symfony/stimulus-bridge@^3.2.0":
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/@symfony/stimulus-bridge/-/stimulus-bridge-3.2.3.tgz#1c496d4b11e24051be26a11045118f29f9c3f9b7"
+  integrity sha512-36rQTihQ2MGOn8EmdOYCr3DQfP3WS1CNcUUXKTPY5ghtFOeb7OVuhbc32AjRowE2/vaVDOUCPOTv3VLf5VtXBA==
+  dependencies:
+    "@hotwired/stimulus-webpack-helpers" "^1.0.1"
+    "@types/webpack-env" "^1.16.4"
+    acorn "^8.0.5"
+    loader-utils "^2.0.0"
+    schema-utils "^3.0.0"
+
+"@types/json-schema@^7.0.8":
+  version "7.0.15"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.15.tgz#596a1747233694d50f6ad8a7869fcb6f56cf5841"
+  integrity sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==
+
+"@types/webpack-env@^1.16.4":
+  version "1.18.8"
+  resolved "https://registry.yarnpkg.com/@types/webpack-env/-/webpack-env-1.18.8.tgz#71f083718c094204d7b64443701d32f1db3989e3"
+  integrity sha512-G9eAoJRMLjcvN4I08wB5I7YofOb/kaJNd5uoCMX+LbKXTPCF+ZIHuqTnFaK9Jz1rgs035f9JUPUhNFtqgucy/A==
+
+acorn@^8.0.5:
+  version "8.15.0"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.15.0.tgz#a360898bc415edaac46c8241f6383975b930b816"
+  integrity sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==
+
+ajv-keywords@^3.5.2:
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.5.2.tgz#31f29da5ab6e00d1c2d329acf7b5929614d5014d"
+  integrity sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ==
+
+ajv@^6.12.5:
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+big.js@^5.2.2:
+  version "5.2.2"
+  resolved "https://registry.yarnpkg.com/big.js/-/big.js-5.2.2.tgz#65f0af382f578bcdc742bd9c281e9cb2d7768328"
+  integrity sha512-vyL2OymJxmarO8gxMr0mhChsO9QGwhynfuu4+MHTAW6czfq9humCB7rKpUjDd9YUiDPU4mzpyupFSvOClAwbmQ==
+
+emojis-list@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/emojis-list/-/emojis-list-3.0.0.tgz#5570662046ad29e2e916e71aae260abdff4f6a78"
+  integrity sha512-/kyM18EfinwXZbno9FyUGeFh87KC8HRQBQGildHZbEuRyWFOmv1U10o9BBp8XVZDVNNuQKyIGIu5ZYAAXJ0V2Q==
+
+fast-deep-equal@^3.1.1:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
+  integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json5@^2.1.2:
+  version "2.2.3"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-2.2.3.tgz#78cd6f1a19bdc12b73db5ad0c61efd66c1e29283"
+  integrity sha512-XmOWe7eyHYH14cLdVPoyg+GOH3rYX++KpzrylJwSW98t3Nk+U8XOl8FWKOgwtzdb8lXGf6zYwDUzeHMWfxasyg==
+
+loader-utils@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-2.0.4.tgz#8b5cb38b5c34a9a018ee1fc0e6a066d1dfcc528c"
+  integrity sha512-xXqpXoINfFhgua9xiqD8fPFHgkoq1mmmpE92WlDbm9rNRd/EbRb+Gqf908T2DMfuHjjJlksiK2RbHVOdD/MqSw==
+  dependencies:
+    big.js "^5.2.2"
+    emojis-list "^3.0.0"
+    json5 "^2.1.2"
+
+punycode@^2.1.0:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.3.1.tgz#027422e2faec0b25e1549c3e1bd8309b9133b6e5"
+  integrity sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==
+
+schema-utils@^3.0.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-3.3.0.tgz#f50a88877c3c01652a15b622ae9e9795df7a60fe"
+  integrity sha512-pN/yOAvcC+5rQ5nERGuwrjLlYvLTbCibnZ1I7B1LaiAz9BRBlE9GMgE/eqV30P7aJQUf7Ddimy/RsbYO/GrVGg==
+  dependencies:
+    "@types/json-schema" "^7.0.8"
+    ajv "^6.12.5"
+    ajv-keywords "^3.5.2"
+
+uri-js@^4.2.2:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
+  integrity sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==
+  dependencies:
+    punycode "^2.1.0"
diff --git a/test/system/symfony-stimulus-bridge.test.ts b/test/system/symfony-stimulus-bridge.test.ts
new file mode 100644
index 0000000..c0204a3
--- /dev/null
+++ b/test/system/symfony-stimulus-bridge.test.ts
@@ -0,0 +1,64 @@
+import { describe, test, expect } from "vitest"
+import { setupProject } from "../helpers/setup"
+
+const project = setupProject("symfony-stimulus-bridge")
+
+describe("System", () => {
+  test("symfony-stimulus-bridge", async () => {
+    expect(project.controllersIndexFiles.length).toEqual(0)
+    expect(project.applicationFile).toBeUndefined()
+    expect(project.registeredControllers.length).toEqual(0)
+
+    await project.initialize()
+
+    expect(project.applicationFile).toBeUndefined()
+    expect(project.controllersIndexFiles.length).toBeGreaterThanOrEqual(1)
+
+    const bootstrapFile = project.controllersIndexFiles.find((f) =>
+      f.path.endsWith("bootstrap.js"),
+    )
+    expect(bootstrapFile).toBeDefined()
+    expect(bootstrapFile?.applicationImport).toBeUndefined()
+
+    expect(project.registeredControllers.length).toEqual(1)
+    expect(
+      project.registeredControllers.map((controller) => [
+        controller.identifier,
+        controller.loadMode,
+      ]),
+    ).toEqual([["hello", "stimulus-loading-lazy"]])
+    expect(Array.from(project.controllerRoots).sort()).toContain(
+      "assets/controllers",
+    )
+  })
+
+  test("symfony-asset-mapper", async () => {
+    const assetMapperProject = setupProject("symfony-asset-mapper")
+
+    expect(assetMapperProject.controllersIndexFiles.length).toEqual(0)
+    expect(assetMapperProject.applicationFile).toBeUndefined()
+    expect(assetMapperProject.registeredControllers.length).toEqual(0)
+
+    await assetMapperProject.initialize()
+
+    expect(assetMapperProject.applicationFile).toBeUndefined()
+    expect(assetMapperProject.controllersIndexFiles.length).toBeGreaterThanOrEqual(1)
+
+    const bootstrapFile = assetMapperProject.controllersIndexFiles.find((f) =>
+      f.path.endsWith("bootstrap.js"),
+    )
+    expect(bootstrapFile).toBeDefined()
+    expect(bootstrapFile?.applicationImport).toBeUndefined()
+
+    expect(assetMapperProject.registeredControllers.length).toEqual(1)
+    expect(
+      assetMapperProject.registeredControllers.map((controller) => [
+        controller.identifier,
+        controller.loadMode,
+      ]),
+    ).toEqual([["hello", "stimulus-loading-lazy"]])
+    expect(Array.from(assetMapperProject.controllerRoots).sort()).toContain(
+      "assets/controllers",
+    )
+  })
+})