An arena is an enclosed area that showcases theatre, musical performances or sporting events.

Arena, ARENA, or the Arena may also refer to:

• Point Arena, California
• Arena Township, Lac qui Parle County, Minnesota
• Arena, North Dakota
• Arena (town), Wisconsin
  • Arena, Wisconsin, village within the town

• Arena, Saskatchewan, Canada
• Arena, Iran
• Arena, Calabria, Italy
• La Arena District, Peru
• San Juan de la Arena, Spain

• 2300 Arena, multipurpose sports venue in Philadelphia, Pennsylvania
• Arena, Vienna, cultural centre
• The Arena, purpose-built arena in Yas Island, Abu Dhabi
• The Arena (Ahmedabad) (EKA Arena), multi-purpose stadium in Ahmedabad, Gujarat, India
• The Arena, Ottawa, former indoor ice hockey arena in Canada
• The Arena, Miami, home stadium of the NBA's Miami Heat
• Erste Bank Arena, indoor sports stadium in Vienna
• Generali Arena (Vienna), former name of football stadium Franz Horr Stadium
• HWS Arena, sports and music venue in Poznań, Poland
• Johan Cruyff Arena, home stadium of football club AFC Ajax in Amsterdam, the Netherlands
• Pula Arena, amphitheatre in Croatia
• St. Louis Arena, former indoor arena in St. Louis, Missouri, United States
• Verona Arena, a Roman amphitheatre in Verona, Italy
• Vienna Watersports Arena, artificial whitewater venue

• Arena (1953 film), a 3-D Western starring Gig Young
• The Arena (1974 film), a gladiator B-movie starring Pam Grier
• Arena (1989 film), a science fiction film starring Paul Satterfield and Claudia Christian
• The Arena (2001 film), a direct-to-video remake of the 1974 film from producer Roger Corman
• Arena (2009 film), a Portuguese short film
• Arena (2011 film), an American film
• Arena (2013 film), a Russian film

• Arena Entertainment, a Mirrorsoft video game label
• ArenaNet, a computer game developer and part of NCsoft Corporation
• Quake III Arena, a multiplayer first-person shooter released on December 2, 1999
• The Elder Scrolls: Arena, the first game in The Elder Scrolls series, released in 1994
• Wing Commander Arena, a multiplayer Xbox 360 game
• Arena, a gameplay mode for Team Fortress 2
• OpenArena, a multiplayer, free, and open source first-person shooter
• Magic: The Gathering Arena, a video game adaptation of the Magic: The Gathering card game

• Arena (Duran Duran album), a 1984 live album by Duran Duran
• Arena (Asia album), a 1996 album by the band Asia
• Arena (Todd Rundgren album), a 2008 album by Todd Rundgren
• Arena (An Absurd Notion), a 1985 concert film by Duran Duran
• Arena (band), a British progressive rock band
• Arena rock, a form of rock music
• Arena di Verona Festival, an opera festival in Verona, Italy
• "The Arena", a 1966 song by Al Hirt

• "Arena" (short story), a 1944 science fiction story by Fredric Brown
• Countdown: Arena, a comic book series, published in 2007 by DC Comics
• Arena, a 2013 novel by Simon Scarrow and T.J. Andrews
• The Arena (novel), a 1962 suspense novel by William Haggard

• Arena (magazine), a British style and entertainment magazine for men
• Arena (Swedish magazine), a Swedish magazine on culture and politics
• Arena Three, a British magazine for homosexual women published by the Minorities Research Group
• The Arena (magazine), a 1899–1909 American liberal literary and political magazine
• Arena (Australian publishing co-operative)
• L'Arena, Italian newspaper

• Arena (TV platform), a German pay TV network
• FOX Arena (TV network), an Australian cable channel
• "Arena" (Star Trek: The Original Series), a 1967 episode of Star Trek
• Arena (British TV series), a long-running BBC British documentary television series
• The Arena (TV series), a debate-style television show produced in Singapore
• Astro Arena (TV channel), Malaysian pay-TV channel
• Arena (miniseries), a 1976 Australian miniseries

• Arena Williams (born 1990), New Zealand politician

• Anthony Arena, American soccer player
• Bruce Arena (born 1951), American soccer coach
• Chris Arena, American singer-songwriter and producer
• Danielle Laraque-Arena, American pediatrician, academician and administrator
• Felice Arena, Australian children's writer
• Gildo Arena (1921–2005), Italian water polo player and freestyle swimmer
• Jack Arena, American ice hockey coach
• James Arena-DeRosa, American politician
• John Arena, American politician
• Kelli Arena, American television journalist
• Kenny Arena, American soccer player
• Kiira Dosdall-Arena, American ice hockey player
• Lello Arena (born 1953), Italian actor
• Maria Arena Bell, American writer
• Marie Arena (born 1966), Belgian politician
• Maurizio Arena (1933–1979), Italian actor
• Romina Arena (born 1980), Italian-American singer-songwriter
• Sammy Arena, American music artist
• Tina Arena (born 1967), Australian singer
• Tony Arena, American football player
• Tony Arena, known as Anonymous Boy, American queer artist, writer, and filmmaker
• Walter Arena (born 1964), Italian race walker

• Arena (software), simulation software
• Arena (web browser), a web browser developed by the W3C for testing support for HTML 3 and Cascading Style Sheets
• Arena allocation, a memory management technique that allows for efficient deallocation

• Arena football, a variety of gridiron football
  • Arena Football League, an American indoor football league
• Arena (swimwear), an Italian brand of competitive swimwear

ARENA may refer to:

• Australian Renewable Energy Agency, a government agency
• National Renewal Alliance Party, a former political party of Brazil
• Nationalist Republican Alliance, a political party of El Salvador

• Arena (countermeasure), a Russian active protection system for tanks
• Arena Pharmaceuticals, a biopharmaceutical company located in San Diego, California
• Arena station (UTA) in Salt Lake City
• Arena tram stop (Croydon) in the London Borough of Croydon
• Arena tram stop (Sheffield) on the Sheffield Supertram network in Sheffield, UK

• Arenafilms, an Australian film production company
• Arenavirus, an RNA virus that mostly affects rodents
• Arenas (disambiguation)
• Larena (disambiguation)
• Bou Saâda, known as Arena during ancient times