The Lothrop Mansion, also known as the Alvin Mason Lothrop House, is an historic home, located at 2001 Connecticut Avenue, Northwest, Washington, D.C., in the Kalorama Triangle neighborhood.

[4] The Beaux Arts home was designed by local architects Hornblower and Marshall, for Alvin Mason Lothrop, in 1908 at a cost of $100,000.

[5] In 1942 the Soviet government bought the building from Nathaniel Luttrell, Jr., the grandson of the original inhabitant.

The Lothrop Mansion is listed on the National Register of Historic Places,[7] and is designated as a contributing property to the Kalorama Triangle Historic District.

This article about a property in the District of Columbia on the National Register of Historic Places is a stub.