Brigadier General Thaddeus Kościuszko is a bronze statue honoring Polish military figure and engineer Tadeusz Kościuszko. The sculpture was dedicated in 1910, the third of four statues in Lafayette Square, Washington, D.C., to honor foreign-born heroes of the American Revolutionary War. Born in the Polish–Lithuanian Commonwealth in 1746, Kościuszko later received education at a Jesuit school before attending the Corps of Cadets in Warsaw. He later traveled to France where he studied in military academy libraries and adopted views of human liberty during the Age of Enlightenment. He moved to the Thirteen Colonies in 1776, where the war with the Kingdom of Great Britain had already begun. Kościuszko served as an engineer in the Continental Army, earning the praise of his superiors, including General George Washington.

Lafayette Square is a seven-acre public park located within President's Park in Washington, D.C., directly north of the White House on H Street, bounded by Jackson Place on the west, Madison Place on the east and Pennsylvania Avenue on the south. It is named for the general, the Marquis de Lafayette, a French aristocrat, and hero of the American Revolutionary War (1775–1783) and includes several statues of revolutionary heroes from Europe, including Lafayette, while at its center is a famous statue of early 19th century U.S. president and general Andrew Jackson on horseback with both of the horse's front hooves raised.