Prince Michaà  Jerzy Poniatowski (12 October 1736 – 12 August 1794) was a Polish nobleman.
Abbot of Tyniec and Czerwià Âsk (opat tyniecki i czerwinski), Bishop of Pà Âock and Coadjutor Bishop of Kraków (koadiutor krakowski) from 1773, and Archbishop of Gniezno and Primate of Poland from 1784.
He was made a knight of the Order of the White Eagle on 25 November 1764. Nine days later, on 4 December, he was made a prince by his brother, the last king of Poland, Stanisà Âaw August Poniatowski.
He was made a royal member of the Royal Society in 1791.