| Abbreviation | Definition |
|---|---|
| BTBC | Bridle Trail Baptist Church |
| BTCL | Bible Training for Church Leaders |
| BTPC | Bethany Trinity Presbyterian Church |
| BUC | Bentley United Church |
| BUCC | Belchertown United Church of Christ |
| BUCC | Bethesda United Church of Christ |
| BUCC | Bluegrass UNITED Church of Christ |
| BUCH | Bulgarian Union of Churches How |
| BUMC | Bellevue United Methodist Church |
| BUMC | Bethesda United Methodist Church |
| BUMC | Birmingham United Methodist Church |
| BUMC | Bozeman United Methodist Church |
| BUMC | Brecksville United Methodist Church |
| BUMC | Brentwood United Methodist Church |
| BUMC | Broadway United Methodist Church |
| BUMC | Brooklet United Methodist Church |
| BUMC | Brooklyn United Methodist Church |
| BUMC | Broomfield United Methodist Church |
| BUMC | Bulverde United Methodist Church |
| BWCC | Bretton Woods Covenant Church |