The United Charities Building, also known as United Charities Building Complex, is at 105 East 22nd Street or 287 Park Avenue South, in the Gramercy Park neighborhood of Manhattan, New York City, near the border of the Flatiron District. It was built in 1893 by John Stewart Kennedy, a wealthy banker, for the Charity Organization Society. It was designated a National Historic Landmark in 1991 for the role the Charity Organization Society played in promoting progressive social welfare policies, including the development of academic disciplines in that area.