The Gertrude Rhinelander Waldo House is a French Renaissance Revival mansion at the southeastern corner of Madison Avenue and 72nd Street on the Upper East Side of Manhattan in New York City. Built between 1894 and 1898, it was designed by Alexander Mackintosh of the architectural firm of Kimball & Thompson. The house was commissioned by the heiress Gertrude Rhinelander Waldo, who never moved in. It was converted to a commercial building in the 20th century, becoming the New York City flagship store of the Ralph Lauren accessory and clothing company in the 1980s. The mansion is a New York City designated landmark and on the National Register of Historic Places.

Madison Avenue is a north-south avenue in the borough of Manhattan in New York City, United States, that carries northbound one-way traffic. It runs from Madison Square to meet the southbound Harlem River Drive at 142nd Street, passing through Midtown, the Upper East Side, East Harlem, and Harlem. It is named after and arises from Madison Square, which is itself named after James Madison, the fourth President of the United States.