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 (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

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