Johann Karl Friedrich zu Carolath-Beuthen (sometimes called von Schoenaich-Carolath and sometimes Friedrich Johann Carl) (11 November 1716 in Carolath–10 February 1791) was an independent prince and Prussian general in the service of Frederick the Great.
He was a son of Prince Hans Carl zu Carolath-Beuthen and his wife, Countess Amalia zu Dohna-Schlodien.