Prince Stanislaw Poniatowski (November 23, 1754 – February 13, 1833) was a Polish nobleman, politician, diplomat, a member of the wealthy Poniatowski family and a nephew of the last king of Poland, Stanislaw II Augustus.
He was the official Commander of the Royal Foot Guards regiment directly responsible for the monarch's life as well as the Grand Treasurer of the Grand Duchy of Lithuania (1784–1791) and Governor of Stryj, which made him a key figure in Poland during the Age of Enlightenment.