Time War

Time War can refer to:
 * Temporal war, a fictional conflict that takes place in multiple time periods, instigated by factions in the future who then travel back and alter history to their own ends
 * Time War (Doctor Who), an event in the fictional Doctor Who universe
 * Time War, a module in the Nintendo game Meteos
 * Time War, a fantasy novel by Lin Carter, published in 1974
 * Time War (board game), a time travel wargame published in 1979 by Yaquinto