| Abbreviation | Definition |
|---|---|
| BAYC | Bridgeport Alliance for Young Children |
| BAZE | Brazilian Alliance for Zero Extinction |
| BBCA | Big Bend Conservation Alliance |
| BCA | Better Communities Alliance |
| BCA | Border Community Alliance |
| BCA | Breast Cancer Alliance |
| BCA | Brevard Cultural Alliance |
| BCAP | Babson Consulting Alliance Program |
| BCIA | Biofeedback Certification International Alliance |
| BCSA | Benton County Skateboarding Alliance |
| BDA | Bowls Development Alliance |
| BDAA | Bristol Dementia Action Alliance |
| BDAI | Bleeding Disorder Alliance Illinois |
| BDAI | Bleeding Disorders Alliance Illinois |
| BEAA | Biosciences Environment and Agriculture Alliance |
| BFA | Bioplastic Feedstock Alliance |
| BFBA | Broadband for the Bush Alliance |
| BFDDA | Bellows Falls Downtown Development Alliance (Bellows Falls, VT) |
| BGA | Blockchain Game Alliance |
| BGAA | Battle Ground Art Alliance |