In Greek mythology, the name Bienor (Βιήνωρ) or Bianor (Βιάνωρ) may refer to:
Bienor, a Centaur at the wedding of Pirithous and Hippodamia, killed by Theseus in the ensuing battle.
Bienor, a defender of Troy killed by Agamemnon.
Bienor, son of Pyrnus, a soldier in the army of Cyzicus killed in the battle against the Argonauts.
Bianor (or Ocnus), son of Manto (either the daughter of Tiresias, or of Heracles) and the river god Tuscus or Tiberis, founder of Mantua which he named after his mother.