Frederick III, Prince of Salm-Kyrburg (Frederick John Otto Francis Christian Philip; 1744–1794) was the prince of Salm-Kyrburg, Hornes and Overijse, Gemen and Count of Solre-le-Château.
He was the eldest son of Philip Joseph, Prince of Salm-Kyrburg and Princess Maria Theresa of Hornes, and he grew up at the French court.
Through his mother, the eldest daughter of Maximilian, Prince of Hornes, he inherited all the possessions of the Hornes family.