Oxon Hill Manor is a neo-Georgian house of 49 rooms, located at Forest Heights, Prince George's County, Maryland.

Also on the property are two outbuildings contemporary with the house; a five-car garage and attached manager's quarters and greenhouse, and a stable.

The colonial-era Addison family, active in the development of Prince George's county and in the colonial government, built a mansion on the property in 1711.

John Hanson, a president of the Continental Congress and Founding Father, died at Oxon Hill Manor on November 22, 1783, and was buried on the property.

[2] It was later (purchased in 1952) the home of Fred Maloof, a wealthy oilman, timberland owner, and art collector who established a museum for fine art and John Hanson memorabilia, before in 1976 the 55 acre parcel and the Manor came under the control of the Maryland-National Capital Park and Planning Commission.