diff --git a/packages/react-native/Libraries/Blob/URLSearchParams.js b/packages/react-native/Libraries/Blob/URLSearchParams.js
index d325f7bb25a8..416c5509940a 100644
--- a/packages/react-native/Libraries/Blob/URLSearchParams.js
+++ b/packages/react-native/Libraries/Blob/URLSearchParams.js
@@ -77,7 +77,14 @@ export class URLSearchParams {
   }
 
   keys(): Iterator<string> {
-    return this._searchParams.keys();
+    function* generateKeys(params: Map<string, string[]>): Iterator<string> {
+      for (const [key, values] of params) {
+        for (let i = 0; i < values.length; i++) {
+          yield key;
+        }
+      }
+    }
+    return generateKeys(this._searchParams);
   }
 
   values(): Iterator<string> {
diff --git a/packages/react-native/Libraries/Blob/__tests__/URL-test.js b/packages/react-native/Libraries/Blob/__tests__/URL-test.js
index 72467dc08ebb..8585f1789e2e 100644
--- a/packages/react-native/Libraries/Blob/__tests__/URL-test.js
+++ b/packages/react-native/Libraries/Blob/__tests__/URL-test.js
@@ -114,6 +114,10 @@ describe('URL', function () {
     expect(paramsFromArray.getAll('key1')).toEqual(['value1', 'value2']);
     expect(paramsFromArray.get('key2')).toBe('value3');
 
+    // keys() should yield one entry per name-value pair, including duplicates
+    const keysArray = Array.from(paramsFromArray.keys());
+    expect(keysArray).toEqual(['key1', 'key1', 'key2']);
+
     // Manipulating existing search params in the URL
     const urlParams = url.searchParams;
     expect(urlParams.get('query')).toBe('testQuery');