WGA
WGA stands for:
- Image resolution , actually WVGA
- Heat acclimatization system , system for fire brigade emergency services to acclimatise to heat
- Wheat Germ agglutinin , protein that specifically binds certain sugar molecules
- Williams Gateway Airport, see Phoenix-Mesa Gateway Airport
- Windows Genuine Advantage , software license authentication from Microsoft
- Writers Guild of America , the common union of authors in the US film and television industry
- Wagga Wagga Airport (IATA code)