Sydney Smith Lee, called Smith Lee in his lifetime, was an American naval officer who served as a captain in the Confederate States Navy during the American Civil War. He was the third child of Henry "Light Horse Harry" Lee and Anne Hill Carter Lee, and the older brother of Confederate general Robert E. Lee.

Henry Lee III was an early American Patriot and politician who served as the ninth Governor of Virginia and as the Virginia Representative to the United States Congress. Lee's service during the American Revolution as a cavalry officer in the Continental Army earned him the nickname by which he is best known, "Light-Horse Harry". He was the father of Robert E. Lee, who led the Army of Northern Virginia against the Union Army during the American Civil War.