James Greenleaf was a late 18th and early 19th century American land speculator responsible for the development of Washington, D.C., after the city was designated as the nation's capital following passage of the Residence Act in 1790. A member of a prominent and wealthy Boston family, he married a Dutch noblewoman, who he later abandoned and then divorced, and served briefly as consul at the United States embassy in Amsterdam.

Buzzard Point, sometimes known as Greenleaf Point, is a peninsula and neighborhood of Washington, D.C., located in Southwest D.C., at the confluence of the Potomac and Anacostia River.