| Abbreviation | Definition |
|---|---|
| AODC | An Open Door Church |
| AOH | Apostolic Overcoming Holy Church |
| AOLA | Advanced Organization of Los Angeles |
| APBC | Adelaide Place Baptist Church |
| APCH | American Protestant Church of The Hague |
| APCI | Affirming Pentecostal Church International |
| APCM | Annual Parochial Church Meeting |
| APCM | Annual Parochial Church meetings |
| APLC | Abiding Presence Lutheran Church |
| APPC | Allen Park Presbyterian Church |
| APUC | Albion Park Uniting Church |
| ARBC | Annistown Road Baptist Church |
| ARBC | Arapahoe Road Baptist Church |
| ARBC | Argyle Road Baptist Church |
| ARBC | Augusta Road Baptist Church |
| ARBC | Austin Ridge Bible Church |
| ARBC | Aversboro Road Baptist Church |
| ARBCA | Association of Reformed Baptist Churches of America |
| ARC | Association of Related Churches |
| ARCC | Alamo Ranch Community Church |