From Wikipedia, the free encyclopedia
Leo III, Leon III, or Levon III may refer to:
- Armenian kings
- Leo III, King of Armenia (1287–1307), ruled from 1303–1307, with his uncle Hetum II as Regent
- Leo II, King of Armenia, sometimes also referred to as Leo III. Ruled from 1269–1289, was the son of Hetum I.
- Leo III the Isaurian (685–741), Byzantine emperor
- Pope Leo III (d. 816), contemporary of Charlemagne
- Leon III of Abkhazia, king of the Kingdom of Abkhazia (960–969), of the House of the Anosids (Anchabadze)
- Other uses
- Leo A, an irregular galaxy in the constellation of Leo
- The Oath of Leo III, 16th-century painting about the 9th century Pope Leo III
- LEO III, the early computer used for commercial business applications.
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