SWA may refer to:
- Swahili language code
- SOAP with Attachments
- Southwest Airlines, its ICAO airline designator and commonly used abbreviation
- Shantou Waisha Airport, Shantou, Guangdong, People’s Republic of China, its IATA airport code
- Scottish Wrestling Alliance, a wrestling promotion in Scotland
- Scotch Whisky Association
- Super Wrestling Alliance, a wrestling promotion in Spain & Europe
- Super White Arrow, a limited express train in Japan
- South-West Africa, the former name of the Republic of Namibia
- SWA, a band started by Chuck Dukowski, bass player for Black Flag
- Student Windsurfing Association, a not-for-profit organisation set up to promote, develop and coordinate student windsurfing in the UK
- Sex Workers Anonymous
- Steel Wire Armoured (SWA) Cable, a type of armoured power cable for underground use
- Swiss World Airways, a short-living airline which was based in Geneva, Switzerland
- SWA (magazine), Indonesian business magazine