Oceana may refer to:
- Oceana (singer), a German singer
- Oceana (album), an album by Derek Sherinian
- Oceana (band), an American post-hardcore band
- Oceana (nightclub), a chain of nightclubs in the United Kingdom
- Oceana (non-profit group), an ocean conservation group
- MV Oceana, a cruise ship
- Oceana Publications, a U.S. law publisher
- Oceàna (opera), by Antonio Smareglia
- The Commonwealth of Oceana, a 1656 political tract by James Harington
- Oceana, a musical project produced by Manny Lehman
- 224 Oceana, an asteroid in the asteroid belt
- "Oceana", a song by the 3rd and the Mortal from the album Tears Laid in Earth
- "Oceana", a song by Butcher Babies from the album Lilith