WOA is an abbreviation for:
- Wacken Open Air, a metal festival in Wacken, Schleswig -Holstein
- Web Oriented Architecture, a framework for distributed, independent and interconnected via hyperlinks data and process elements, similar to Service Oriented Architecture ( SOA)
- Competition Rules of the architects, an Austrian provision for the regulation of architectural competitions
- Windows on ARM, the development name of the Microsoft operating system Windows RT for the ARM architecture.
- The International IATA code for the airport in the city Wonenara in Papua New Guinea
- World Airways, an American airline ( ICAO code )