Owain Lawgoch (English: Owain of the Red Hand, French: Yvain de Galles, lit. 'Owen of Wales'), full name Owain ap Thomas ap Rhodri (c. 1330 – July 1378), was a Welsh soldier who served in Lombardy, France, Alsace, and Switzerland. He led a Free Company fighting for the French against the English in the Hundred Years' War. As a politically active descendant of Llywelyn the Great in the male line, he was a claimant to the title of Prince of Gwynedd and of Wales.