| Abbreviation | Definition |
|---|---|
| BA | Believing Attitude |
| BA | Benares Archive |
| BA | Blind Angel |
| BA | Born Again |
| BABT | Broken Arrow Baptist Temple |
| BAC | Bishop's Advisory Committee |
| BAC | Born Again Christian |
| BACH | Bay Area Catholic Homeschoolers |
| BACH | Bellevue Area Christian Homeschoolers |
| BACH | Boerne Area Christian Homeschoolers |
| BACN | Benzie Area Christian Neighbors |
| BACS | Bay Area Christian School |
| BAF | Bring A Friend |
| BAG | Baptism Assimilation Group |
| BAG | Bhagwaan, Allah, and God |
| BAG | Black Artists Group |
| BAM | Babel Abstract Machine |
| BAM | Bible Answer Man |
| BAM | Born Again Modularization |
| BAMM | Business As Mission and Ministry |