Hippolytus may refer to:
- In Greek mythology:
- Hippolytus, son of Theseus
- Hippolytus, son of Aegyptus, killed by the Danaid Rhode
- Hippolytus, one of the Gigantes, slain by Hermes
- Hippolytus, a lover of Aegiale (wife of Diomedes)
- Hippolytus, father of Deiphobus of Amyclae (the one who cleansed Heracles for the murder of Iphitus)
- Hippolytus, successor to Zeuxippus as king of Sicyon, son of Rhopalus, grandson of Phaestus and father of Lacestades
- Hippolytus, beloved of Apollo
- Historical figures:
- Hippolytus of Rome (died 235), Christian writer and saint
- Hippolytus of Thebes, Byzantine chronographer
- Saint Hippolytus, one of several possible saints of that name
- Literary works based on the Greek myth:
- Hippolytus (play), a tragedy by Euripides
- Phaedra (Seneca), sometimes known as Hippolytus, play by Seneca the Younger
- A character in Jean Racine's play Phèdre
- Institutions/Organisations:
- Hippolytus a Greek non profit organisation for the preservation and cultural promotion of the Skyros Pony.