A world war is an armed conflict involving many nations.
World war may also refer to:
- World War I (1914–18)
- World War II (1939–45)
- World War III, a discussed future possible conflict
Arts and entertainment
edit- "World War" (The Cure song)
- The World Wars (miniseries), a History Channel series
- Worldwar, a series of novels by Harry Turtledove