An ocean is a major body of salt water on Earth.
Ocean may also refer to:
Bodies of water
- World Ocean, also known as Global Ocean or World Sea or simply the ocean or oceans
- The sea
Science and astrophysics
- Ocean world
- Hycean planet, planet covered in water with a hydrogen atmosphere -- an ocean planet with hydrogen atmosphere
- Lava planet, planet covered in a lava ocean
- Lakes of Titan, lakes of ethane and methane on the largest natural satellite of Saturn
- Liquid hydrogen on Jupiter, sometimes described as ocean-like
- Planetary oceanography
Places
- Ocean (Muni), a station on the San Francisco Municipal Railway light rail network
- Océan, a department of South Province in Cameroon
- Ocean, Maryland, a small town in the United States
- Ocean County, New Jersey, United States
- Ocean Harbour, South Georgia
People
- Ocean Hellman (born 1971), Canadian former actress
- Ocean Ramsey (born 1987), marine biologist and shark conservationist
- Ocean Vuong (born 1988), a Vietnamese-American writer
- Billy Ocean, a British pop recording artist
- Danny Ocean (singer), Venezuelan singer and producer
- Frank Ocean, an American recording artist
Arts, entertainment, and media
Music
Groups
- Ocean (band), a 1970s Canadian gospel rock band
- Oceán (Czech band), a 1990s Czech synth-pop band
- The Ocean (band), a 2000s German post-metal band
Albums
- Ocean (Eloy album), 1977
- Ocean (Stephan Micus album), 1986
- Ocean (Bebo Norman album), 2010
- Ocean (Lady Antebellum album), 2019
- Ocean (Karol G album), 2019
- Oceans (Esprit D'Air album), 2022
Extended plays
- Oceans (EP), a 2013 EP by Hillsong United
Songs
- "Ocean" (B'z song), 2005
- "Ocean" (Karol G song), 2019
- "Ocean" (Goldfrapp song), 2017
- "Ocean" (Martin Garrix song), 2018
- "Ocean" (Spencer Tracy song), 2003
- "Ocean" (Sebadoh song), 1996
- "Oceans" (Coldplay song), 2014
- "Oceans" (Evanescence song), 2011
- "Oceans" (Jay-Z song), 2013
- "Oceans" (Morning Runner song), 2006
- "Oceans" (Pearl Jam song), 1992
- "Oceans" (The Tea Party song), 2005
- "Oceans (Where Feet May Fail)", a song by Hillsong United, 2013
- "The Ocean" (Led Zeppelin song), 1973
- "The Ocean" (Steve Angello song), 2015
- "The Ocean" (Against Me!), on the 2007 album New Wave
- "The Ocean" (Mike Perry song), 2016
- "Ocean", a song by Cold on the 2005 album A Different Kind of Pain
- "Ocean", a song by Five for Fighting on the 1997 album Message for Albert
- "Ocean", a song by the John Butler Trio on the 1998 album John Butler
- "Ocean", a song by Lady Antebellum on the 2019 album Ocean
- "Ocean", a song by Slightly Stoopid on the 2007 album Chronchitis
- "Ocean", a song from Lou Reed's 1972 eponymous debut solo album
- an earlier version recorded by the Velvet Underground is found on their box set Peel Slowly and See
- "Ocean", a song by Matt Brouwer on the 2012 album Till the Sunrise
- "Oceans", a song by Dash Berlin, 2021
- "Oceans", a song by Rebecca Ferguson on the 2016 album Superwoman
- "Oceans", a song by Gary Numan on the 1979 album The Pleasure Principle
- "Oceans", a song by The Format on the 2006 album Dog Problems
- "The Ocean", by Sunny Day Real Estate on the 2000 album The Rising Tide
- "The Ocean", a song by Tegan and Sara on the 2009 album Sainthood
- "The Ocean", a song from the 1980 U2 album Boy
Radio stations
- Ocean FM (Cayman Islands), a defunct radio station in the Cayman Islands
- Ocean FM (Ireland), a local radio station that broadcasts to the northwest of Ireland
- Ocean FM (UK)
Television
- "Ocean" (Wonder Showzen episode)
- Oceans (TV series), an eight-part series on BBC Two
Other arts, entertainment, and media
- Ocean (comics), a miniseries by Warren Ellis and Chris Sprouse
- Ocean (Marvel Comics), a superhuman mutant
- Ocean Productions, an animation recording company
- Ocean Software, a video game publisher
- Oceans (film), a documentary by Jacques Perrin
Resorts
- Ocean Resort Casino, in Atlantic City, New Jersey
Transport
Automobile
- Fisker Ocean, electric crossover SUV
Air transport
- Ocean Airlines, a cargo airline based in Brescia, Italy
Rail transport
- Ocean (train), a Canadian passenger train
- AS Ocean, a former Larvik company operating a whaling station and light railway in South Georgia
Ships
- Ocean (East Indiaman), a name given to several East Indiamen that sailed for the Honourable East India Company
- Ocean (ship), a name given to several vessels that brought convicts from Britain to Australia
- HMS Ocean, a name given to several Royal Navy vessels
- Ocean 40, an American sailboat design
- Océan-class ironclads built for the French navy
- USS Ocean, a U.S. Navy ship
Other uses
- Big Five personality traits, known as the OCEAN model of personality
- Cosmic ocean, a mythological motif
- Helio Ocean, a mobile device
- Ocean Racing Technology, a Portuguese auto racing team