Phaedrus may refer to:
- People
- Phaedrus (Athenian) (c. 444 BC – 393 BC), an Athenian aristocrat depicted prominently in Plato's dialogues
- Phaedrus (fabulist) (c. 15 BC – c. AD 50), a Roman fabulist
- Phaedrus the Epicurean (138 BC – c. 70 BC), an Epicurean philosopher
- Art and literature
- Phaedrus (dialogue), a dialogue of Plato's
- Phaedrus (play), a 3rd century BC comedic play by Alexis
- Phaedrus, character in Zen and the Art of Motorcycle Maintenance
- A work by Cy Twombly