diff --git a/chrome/android/java/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridge.java
index 1261bf699c916..2de9bf69f77e4 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridge.java
@@ -8,6 +8,8 @@ import static org.chromium.build.NullUtil.assertNonNull;
 
 import android.app.Activity;
 
+import androidx.annotation.VisibleForTesting;
+
 import org.jni_zero.CalledByNative;
 import org.jni_zero.JNINamespace;
 import org.jni_zero.JniType;
@@ -25,7 +27,7 @@ import org.chromium.ui.modaldialog.DialogDismissalCause;
 @JNINamespace("autofill")
 @NullMarked
 final class AutofillNameFixFlowBridge implements AutofillNameFixFlowPromptDelegate {
-    private final long mNativeCardNameFixFlowViewAndroid;
+    private long mNativeCardNameFixFlowViewAndroid;
     private final @Nullable Activity mActivity;
     private final String mTitle;
     private final String mInferredName;
@@ -33,7 +35,8 @@ final class AutofillNameFixFlowBridge implements AutofillNameFixFlowPromptDelega
     private final int mIconId;
     private @Nullable AutofillNameFixFlowPrompt mNameFixFlowPrompt;
 
-    private AutofillNameFixFlowBridge(
+    @VisibleForTesting
+    AutofillNameFixFlowBridge(
             long nativeCardNameFixFlowViewAndroid,
             String title,
             String inferredName,
@@ -74,16 +77,20 @@ final class AutofillNameFixFlowBridge implements AutofillNameFixFlowPromptDelega
 
     @Override
     public void onPromptDismissed() {
+        if (mNativeCardNameFixFlowViewAndroid == 0) return;
         AutofillNameFixFlowBridgeJni.get().promptDismissed(mNativeCardNameFixFlowViewAndroid);
+        mNativeCardNameFixFlowViewAndroid = 0;
     }
 
     @Override
     public void onUserDismiss() {
+        if (mNativeCardNameFixFlowViewAndroid == 0) return;
         AutofillNameFixFlowBridgeJni.get().onUserDismiss(mNativeCardNameFixFlowViewAndroid);
     }
 
     @Override
     public void onUserAcceptCardholderName(String name) {
+        if (mNativeCardNameFixFlowViewAndroid == 0) return;
         AutofillNameFixFlowBridgeJni.get().onUserAccept(mNativeCardNameFixFlowViewAndroid, name);
     }
 
diff --git a/chrome/android/junit/BUILD.gn b/chrome/android/junit/BUILD.gn
index b980f25f63421..d7c8e18261126 100644
--- a/chrome/android/junit/BUILD.gn
+++ b/chrome/android/junit/BUILD.gn
@@ -505,6 +505,7 @@ if (is_android) {
       "src/org/chromium/chrome/browser/autofill/AutofillFallbackSurfaceLauncherTest.java",
       "src/org/chromium/chrome/browser/autofill/AutofillImageFetcherTest.java",
       "src/org/chromium/chrome/browser/autofill/AutofillImageFetcherUtilsTest.java",
+      "src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridgeTest.java",
       "src/org/chromium/chrome/browser/autofill/AutofillUiUtilsTest.java",
       "src/org/chromium/chrome/browser/autofill/CardUnmaskBridgeTest.java",
       "src/org/chromium/chrome/browser/autofill/GoogleWalletLauncherTest.java",
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridgeTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridgeTest.java
new file mode 100644
index 0000000000000..af171f278be7e
--- /dev/null
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/autofill/AutofillNameFixFlowBridgeTest.java
@@ -0,0 +1,112 @@
+// Copyright 2026 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.autofill;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoMoreInteractions;
+
+import android.app.Activity;
+
+import androidx.test.filters.SmallTest;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.Robolectric;
+
+import org.chromium.base.test.BaseRobolectricTestRunner;
+import org.chromium.ui.base.WindowAndroid;
+
+/** Unit tests for {@link AutofillNameFixFlowBridge}. */
+@SmallTest
+@RunWith(BaseRobolectricTestRunner.class)
+public final class AutofillNameFixFlowBridgeTest {
+    private static final long NATIVE_POINTER = 0x1234abcdL;
+
+    @Rule public MockitoRule mMockitoRule = MockitoJUnit.rule();
+
+    @Mock private AutofillNameFixFlowBridge.Natives mNativeMock;
+
+    private WindowAndroid mWindowAndroid;
+    private AutofillNameFixFlowBridge mBridge;
+
+    @Before
+    public void setUp() {
+        AutofillNameFixFlowBridgeJni.setInstanceForTesting(mNativeMock);
+
+        Activity activity = Robolectric.buildActivity(Activity.class).create().get();
+        mWindowAndroid = new WindowAndroid(activity, /* occlusionTrackingAllowed= */ false);
+
+        mBridge =
+                new AutofillNameFixFlowBridge(
+                        NATIVE_POINTER,
+                        /* title= */ "Title",
+                        /* inferredName= */ "Jane Doe",
+                        /* confirmButtonLabel= */ "Confirm",
+                        /* iconId= */ 0,
+                        mWindowAndroid);
+    }
+
+    @After
+    public void tearDown() {
+        mWindowAndroid.destroy();
+    }
+
+    @Test
+    public void testOnUserAcceptCardholderName_callsNative() {
+        mBridge.onUserAcceptCardholderName("Jane Doe");
+
+        verify(mNativeMock).onUserAccept(NATIVE_POINTER, "Jane Doe");
+    }
+
+    @Test
+    public void testOnUserDismiss_callsNative() {
+        mBridge.onUserDismiss();
+
+        verify(mNativeMock).onUserDismiss(NATIVE_POINTER);
+    }
+
+    @Test
+    public void testOnPromptDismissed_callsNative() {
+        mBridge.onPromptDismissed();
+
+        verify(mNativeMock).promptDismissed(NATIVE_POINTER);
+    }
+
+    @Test
+    public void testOnUserAcceptCardholderName_afterPromptDismissed_doesNotCallNative() {
+        mBridge.onPromptDismissed();
+        verify(mNativeMock).promptDismissed(NATIVE_POINTER);
+
+        mBridge.onUserAcceptCardholderName("Jane Doe");
+
+        verifyNoMoreInteractions(mNativeMock);
+    }
+
+    @Test
+    public void testOnUserDismiss_afterPromptDismissed_doesNotCallNative() {
+        mBridge.onPromptDismissed();
+        verify(mNativeMock).promptDismissed(NATIVE_POINTER);
+
+        mBridge.onUserDismiss();
+
+        verifyNoMoreInteractions(mNativeMock);
+    }
+
+    @Test
+    public void testOnPromptDismissed_afterPromptDismissed_doesNotCallNative() {
+        mBridge.onPromptDismissed();
+        verify(mNativeMock).promptDismissed(NATIVE_POINTER);
+
+        mBridge.onPromptDismissed();
+
+        verifyNoMoreInteractions(mNativeMock);
+    }
+}