| Acronym | Definition |
|---|
| WAR | Web Archive |
| WAR | Warrior (Everquest) |
| WAR | Warrant Officer |
| WAR | Warrant |
| WAR | Warhammer Online: Age of Reckoning (game) |
| WAR | Warrensburg (Warrensburg, MO) |
| WAR | Wins above Replacement (baseball) |
| WAR | Weapons and Rage (gaming) |
| WAR | We Are Right |
| WAR | Wildlife at Risk |
| WAR | Within Arms Reach |
| WAR | What A Relief |
| WAR | Web Application Archive |
| WAR | White Aryan Resistance |
| WAR | Women Against Rape |
| WAR | W. Axl Rose (Guns N Roses frontman) |
| WAR | Write after Read (computing) |
| WAR | Wide Area Radio |
| WAR | War and Romance (defunct Wrestling Promotion in Japan) |
| WAR | Washington Association of Realtors |
| WAR | Weekly Activity Report |
| WAR | Willing, Able and Ready |
| WAR | We Are Relentless |
| WAR | Wireless Access Revolution |
| WAR | Wireless Advanced Router (various companies) |
| WAR | Women's Association of Romania |
| WAR | Week Ahead Report (California Office of Emergency Services) |
| WAR | With All Risks |
| WAR | Wide Angle Reflection |
| WAR | Women Accepting Responsibility |
| WAR | Women's Army Rugby (US Military Academy; West Point, NY) |
| WAR | Web Application Repository |
| WAR | Work Authorization Request |
| WAR | Woolmead Avenue Residents Association (UK) |
| WAR | Wartime Asset Redistribution |
| WAR | Work Acceptance Record |
| WAR | Women Against Risk (Harm Reduction Project) |
| WAR | Warren Town Railroad Company |