King Leo may refer to:
Leo I, King of Armenia (1150–1219), sometimes also referred to as Leo II, to be distinguished from Leo I, Prince of Armenia Leo II, King of Armenia (1236–1289), sometimes also referred to as Leo III Leo III of Armenia (1286–1307), sometimes also referred to as Leo IV Leo IV of Armenia (1309–1341), sometimes also referred to as Leo V Leo V of Armenia (1342–1393), sometimes also referred to as Leo VI King Leo, main antagonist in the videogame Savage Reign