| Abbreviation | Definition |
|---|---|
| RCDE | Roman Catholic Diocese of Erie |
| RCDE | Roman Catholic Diocese of Evansville |
| RCDM | Russian Christian Democratic Movement |
| RCDS | Riverside Christian Day School |
| RCE | Religious of Christian Education |
| RCE | Resourcing Christian Education |
| RCE | Restored Covenant Edition |
| RCF | Reno Christian Fellowship |
| RCF | Restoration Christian Fellowship |
| RCF | Roman Catholic Faithful |
| RCF | Rushmere Christian Fellowship |
| RCG | Re-formed Congregation Group |
| RCG | Rudolf Christian Gribel |
| RCH | Rapha Christian Home |
| RCH | Ruston Christian Homeschoolers |
| RCI | Rite of Christian Initiation |
| RCIA | Right of Christian Initiation for Adults |
| RCIA | Rite for Christian Initiation of Adults |
| RCIA | Rite of Catholic Initiation for Adults |
| RCIA | Rite of Catholic Initiation of Adults |