Elysia may signify:
- Elysia (band), a deathcore band
- Elysia (gastropod), a genus of gastropods
- Elysium, a section of the underworld containing the Elysian Fields
- Elysia, pure heart.
- Elysia, a gas giant in Metroid Prime 3: Corruption.
- Elysia, Valley of the Nude a 1933 film about the nudist movement