In Greek mythology, the name Ornytus may refer to:
- Ornytus or Ornytion, a son of Sisyphus.[1]
- Ornytus or Ornytion, grandson of the above, father of Naubolus.[2]
- Ornytus, possible leader of the army that came from Teuthis to join in the campaign against Troy. Alternately, the leader was named Teuthis.[3]
- Ornytus, a Bebrycian briefly mentioned in the Argonautica: he helps Amycus to put his gauntlets on for the boxing match with Polydeuces.[4]
- Ornytus, a Dolonian killed by Idmon.[5]
- Ornytus, a soldier who fought under Aeneas and was killed by Camilla.[6]
- Ornytus, a soldier who fought with the Seven against Thebes, and survived the war.[7]
- Ornytus, a person who was believed to have led a colony in Caria together with Ioxus, son of Melanippus (the son of Theseus and Perigune).[8]