AOW may refer to:

• Act of War: Direct Action, a real-time strategy video game
• Act of War: High Treason, an expansion pack for Act of War: Direct Action
• Advanced Open Water, a scuba diving training level common to many certification agencies
• Algemene Ouderdomswet, a Dutch pension act
• Age of Wonders, a turn-based strategy PC game
• Any Other Weapon, a weapons classification in the United States National Firearms Act
• Age of Wulin, a free-to-play Wuxia MMORPG published by Gala Networks Europe
• Art of Wrestling, a pro wrestling radio show by Colt Cabana
• Autostradowa Obwodnica Wrocławia, Wrocław motorway bypass in Poland