| Abbreviation | Definition |
|---|---|
| MPLB | Muslim Personal Law Board |
| MPN | Mennonite Publishing Network |
| MPP | Ministerial Pension Plan |
| MPRC | Montreal Pagan Resource Centre |
| MPRP | Monthly Prayer Request for Priests |
| MPRP | Muslim People's Republic Party |
| MPSN | Muslim Public Service Network |
| MPT | Missionary Partnership Teams |
| MPV | Muslims for Progressive Values |
| MQP | Mary Queen of Peace Church |
| MR | Most Righteous |
| MR | Muslim Response |
| MRCS | Moffett Road Christian School |
| MRCS | Maple Ridge Christian School |
| MRFF | Military Religious Freedom Foundation |
| MRG | Mix Religious Group |
| MRHA | Maintenance of Religious Harmony Act |
| MRJ | Men of Reform Judaism |
| MRM | Mormonism Research Ministry |
| MRM | Muslim Rashtriya Manch |