| Abbreviation | Definition |
|---|---|
| BASW | British Association of Social Workers |
| BAT | Bouquet Association Table |
| BATA | Barrington Area Tennis Association |
| BATA | Bay Area Telugu Association |
| BATA | Brandsby Agricultural Trading Association |
| BATA | British Air Transport Association |
| BATA | British Assistive Technology Association |
| BATA | Buckeye Art Therapy Association |
| BATC | Builders Association |
| BATC | Builders Association of the Twin Cities |
| BATM | Belgian Association of Travel Management |
| BATSA | Boston Area Talent Sourcing Association |
| BAU | Belgian Association of Urology |
| BAUA | Baltic Architects unions association |
| BAUS | Bangladesh Association of Urological Surgeons |
| BAUS | British Association of Urological Surgeons |
| BAUS | Buddhist Association of the United States |
| BAVA | British Association of Veterinary Acupuncturists |
| BAVIP | Bradford Association of Visually Impaired People |
| BAVO | Bridgend Association of Voluntary Organisations Bridgend |