The Dr. Joseph Leidy House is a historic residence located at 1319 Locust Street between S. 13th and S. Juniper Streets in the Washington Square West neighborhood of Philadelphia, Pennsylvania.

It was built in 1893 and 1894 and was designed in the Georgian style[2] by architect Wilson Eyre to be the home of Joseph Leidy, Jr., the nephew of Joseph Leidy (1823–1891), a noted American paleontologist.

From 1925 to 1979, the Leidy House served as the clubhouse of the now-defunct Poor Richard Club, whose members worked in advertising,[3] and with the Moore House next door, was part of the Charles Morris Price School of Advertising and Journalism.

[4] Currently, it is the headquarters of District 1199C, the National Union of Hospital and Health Care Employees.

[4] The house was added to the National Register of Historic Places in 1980.