Ganymede most often refers to:
- Ganymede (mythology), Trojan prince in Greek mythology
- Ganymede (moon), Jupiter's largest moon, named after the mythological character
Ganymede, Ganymed or Ganymedes may also refer to:
- Ganymedes (eunuch), tutor of Arsinoe IV of Egypt and adversary to Julius Caesar
- Ganymed (Goethe), a poem by Goethe
- Ganymede (band), a 2000s American band
- Ganymed (band), a 1970s Austrian disco band
- 1036 Ganymed, an asteroid
- Ganymede (software), a GPL-licensed network directory management system
- Ganymede, the name used by Rosalind when she is disguised as a man in Shakespeare's As You Like It
- Ganymede, the servant of the sculptor Pygmalion in the operetta Die schöne Galathee by Franz von Suppé
- Ganymede, the name of the 2008 annual project release by the Eclipse Software Foundation
- Ganymede, a novel in Cherie Priest's Clockwork Century series.
- Ganymede, a short story by Daphne du Maurier in The Breaking Point (anthology).
- Ganymede System (in hospital catering) based on plates with heated metal pellets that release heat into the plate over the period of delivery of food to wards on trolleys.