World War III, World War Three, or the Third World War is a hypothetical successor to World War II (1939–1945).
World War III may also refer to:
Literature
- World War III (Left Behind), a rider in the Left Behind series of novels
- The Third World War (novel), a 2003 novel by Humphrey Hawksley
- The Third World War (Hackett novels), 1978 and 1982 novels by General Sir John Hackett
Comics
- World War 3 Illustrated, a political comics anthology founded in 1979
- Third World War (comics), a political comic strip appearing in Crisis beginning in 1988
- World War III (DC Comics), the title of two sagas published in superhero comic books by DC Comics beginning in 2000
- World War III (G.I. Joe), a comic book storyline published by Devil's Due Publishing beginning in 2007
Games
- World War 3: 1976-1984, a 1975 board wargame that simulates a hypothetical war for world domination
- The Third World War (video game), for the Sega Mega-CD console
- World War III: Black Gold, a 2001 Microsoft Windows computer game
- World War 3 (video game), a 2018 game by The Farm 51
Film and television
- World War III (1998 film), a 1998 German film by Robert Stone
- World War III (2022 film), a 2022 Iranian film
- WW3, a 2001 TV-movie starring Timothy Hutton and Vanessa L. Williams
- World War III (miniseries), a 1982 American TV miniseries directed by David Greene
- "World War Three" (Doctor Who), a 2005 episode of the BBC science fiction television series Doctor Who
- WCW World War 3, an annual professional wrestling pay-per-view event
- "World War III", a 1985 episode of the TV sitcom Night Court
Music
Bands
- Third World War (band), an English proto-punk band formed in 1970
- WWIII, a Los Angeles–based band fronted by Mandy Lion
Albums
- World War III (Mac album), 1999
- World War III (Madina Lake album), 2011
- WWIII (album), a 2003 album by KMFDM
Songs
- "World War III", a song by Anti-Nowhere League from We Are...The League, 1982
- "World War III", a song by Bad Religion from Bad Religion, 1981
- "World War III", a 1982 song by Exciter
- "World War III", a song by Grandmaster Flash and the Furious Five from Grandmaster Flash and the Furious Five, 1984
- "World War III", a song by the Jonas Brothers from Lines, Vines and Trying Times, 2009
- "World War III", a 1979 song by The Suburbs
- "World War Three", a 1979 song by D.O.A.
- "WW III" (song), a 2000 song by Ruff Ryders
- "WWIII", a 2020 song by Machine Gun Kelly from Tickets to My Downfall
- "WW3", a 2017 song by Paloma Faith from The Architect
- "3rd World War", a 2013 song by Jesse Jagz from the soundtrack of the film Heaven's Hell