English abbreviations from wa to waav
- wa (Walloon language (ISO 639-1 code))
- WAA (Wales Airport (FAA: IWK))
- WAAA (Washtenaw Area Apartment Association)
- WAAC (Women's Auxiliary Army Corps and individual members of; obsolete)
- WAAE (Watsonville/ Aptos Adult Education)
- WAAF (Women's Auxiliary Air Force (World War)
- WAAI (Women's Automotive Association International)
- WAAM (Witham Airport Action Majority)
- WAAP (World Association for Animal Protection)
- WAAS (Wide Area Augmentation System)
- WAAT (Windows Administrator Authentication Testing)
- WAAV (Winthrop Alumni Admissions Volunteers)