Vanderbilt Mansion National Historic Site is a historic house museum in Hyde Park, New York, United States. It became a National Historic Landmark in 1940. It is owned and operated by the National Park Service.

Hyde Park is a town in Dutchess County, New York, United States, bordering the Hudson River north of Poughkeepsie. Within the town are the hamlets of Hyde Park, East Park, Staatsburg, and Haviland. Hyde Park is known as the hometown of Franklin D. Roosevelt, the 32nd president of the United States. His house there, now the Home of Franklin D. Roosevelt National Historic Site, is listed on the U.S. National Register of Historic Places, as are the homes of Eleanor Roosevelt, Isaac Roosevelt, and Frederick William Vanderbilt, along with Haviland Middle School.