WOA

• Web-oriented architecture, a computer systems architectural style
• Windows on ARM (disambiguation), a series of operating systems for ARM architecture computers
• WebObjects application, the file system suffix of an application written using the WebObjects framework from NeXT, later Apple

• War of Attrition, a conflict between Israel and Egypt
• War of aggression

• Wacken Open Air, the largest exclusively metal music festival in the world
• War of Ages, metalcore band from Pennsylvania
• W.O.A Records of India and Dubai

• World Olympians Association
• Welsh Orienteering Association

• World Ocean Atlas
• World of Art, a series of books on art
• the ICAO airline designator for World Airways

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