Convent of the Sacred Heart is an American independent Roman Catholic all-girls' school in the Manhattan borough of New York City. Teaching from pre-kindergarten through twelfth grade, it is located on Manhattan's Upper East Side at East 91st Street and Fifth Avenue. The school is housed in the former Otto H. Kahn House and James A. Burden House, both of which are New York City-Designated Landmarks, and are listed on the National Register of Historic Places.