diff --git a/src/index.ts b/src/index.ts
index 7e0f87990..88964cd9e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -44,6 +44,7 @@ import {
 import { StreetViewService } from "./street-view/service/service";
 import { ControlPosition } from "./maps/controls/controlposition";
 import { MapTypeId } from "./maps/maps/constants";
+import { InfoWindow_ } from "./maps/infowindow/infowindow";
 import { event } from "./maps/event/event";
 import { mockInstances } from "./registry";
 
@@ -80,6 +81,7 @@ const initialize = function (): void {
       MapCanvasProjection: MapCanvasProjection,
       MapPanes: MapPanes,
       VisibleRegion: VisibleRegion,
+      InfoWindow: InfoWindow_,
     },
   };
 };
@@ -105,6 +107,7 @@ export {
   StreetViewPanorama,
   StreetViewService,
   VisibleRegion,
+  InfoWindow_ as InfoWindow,
   mockInstances,
   initialize,
 };
diff --git a/src/maps/infowindow/infowindow.test.ts b/src/maps/infowindow/infowindow.test.ts
new file mode 100644
index 000000000..82586ef6d
--- /dev/null
+++ b/src/maps/infowindow/infowindow.test.ts
@@ -0,0 +1,29 @@
+/**
+ * Copyright 2019 Google LLC. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { initialize } from "../../index";
+import { InfoWindow_ } from "./infowindow";
+
+test("can initialize", () => {
+  initialize();
+  expect(new google.maps.InfoWindow()).toBeTruthy();
+});
+
+test("mockInstances available", () => {
+  initialize();
+  const infowindow = new google.maps.InfoWindow();
+  expect(InfoWindow_.mockInstances).toMatchObject([infowindow]);
+});
diff --git a/src/maps/infowindow/infowindow.ts b/src/maps/infowindow/infowindow.ts
new file mode 100644
index 000000000..64b785b28
--- /dev/null
+++ b/src/maps/infowindow/infowindow.ts
@@ -0,0 +1,66 @@
+/**
+ * Copyright 2019 Google LLC. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { LatLng } from "../coordinates/latlng";
+import { MVCObject } from "../event/mvcobject";
+
+export class InfoWindow_ extends MVCObject implements google.maps.InfoWindow {
+  public close = jest.fn().mockImplementation((): void => null);
+  public getContent = jest
+    .fn()
+    .mockImplementation((): string | Element | null | Text | undefined => {
+      return jest.fn() as unknown as Element;
+    });
+  public getPosition = jest
+    .fn()
+    .mockImplementation(
+      (): google.maps.LatLng | null | undefined =>
+        new LatLng({ lat: 0, lng: 0 })
+    );
+  public getZIndex = jest
+    .fn()
+    .mockImplementation((): number | null | undefined => 1);
+  public open = jest
+    .fn()
+    .mockImplementation(
+      (
+        options?:
+          | google.maps.InfoWindowOpenOptions
+          | google.maps.Map
+          | google.maps.StreetViewPanorama,
+        anchor?: google.maps.MVCObject
+      ): void => null
+    );
+  public setContent = jest
+    .fn()
+    .mockImplementation((content?: string | Element | Text): void => null);
+  public setOptions = jest
+    .fn()
+    .mockImplementation(
+      (options?: google.maps.InfoWindowOptions): void => null
+    );
+  public setPosition = jest
+    .fn()
+    .mockImplementation(
+      (position?: google.maps.LatLng | google.maps.LatLngLiteral): void => null
+    );
+  public setZIndex = jest
+    .fn()
+    .mockImplementation((zIndex?: number): void => null);
+  constructor(opts?: google.maps.InfoWindowOptions) {
+    super();
+  }
+}