| Abbreviation | Definition |
|---|---|
| RPA | Robb Park Abbey |
| RPCNA | Reformed Presbyterian Church of North America |
| RPH | Rochester Presbyterian Home |
| RPM | Relationship Process Management |
| RPM | Revolutionary Praise Music |
| RPPO | Religion Past and Present Online |
| RPR | Religion Prétendue Réformée |
| RPS | Religion Politics Society |
| RPT | Religion, Philosophy, and Theology |
| RQ | Repentance Quotient |
| RR | Religious Right |
| RRBC | Raleigh Road Baptist Church |
| RRBC | Reimer Road Baptist Christian |
| RRBC | River Road Baptist Church |
| RRC | Radical Radiant Catholicism |
| RRC | Reconstructionist Rabbinical College |
| RRCB | River Road Church, Baptist |
| RRD | Redeemed Resurrected Delivered |
| RRF | Reformation and Revival Fellowship |
| RRF | Religious Research Foundation |