Leo II (or Leon II) may refer to:
People Leo II (emperor), Byzantine emperor who reigned from January 18 to November 17, 474 Pope Leo II, pope from August 682 to July 683 Leon II of Abkhazia (767/68–811/12) Leo II (archbishop of Ravenna) (d. 1001) Leo II (1150–1219), King of Armenia, sometimes referred to as Leo I, King of Armenia or Levon I of Armenia, initially known as Prince Leo II Leo II, King of Armenia (1236–1289), sometimes also referred to as Leo III Leo II of Halych (d. 1323)
Other Leo II (dwarf galaxy), a dwarf galaxy discovered in 1950 LEO II (computer), an early commercial programmable computer Leo II (theorem prover), an automated theorem prover Leopard 2, a German battle tank
tr:II. Leo