| MRRR | Medical Radioisotope and Research Reactor 
| Others |
| MRRR | Ministry of Reconstruction Resettlement and Rehabilitation
| Others |
| MRRR | Ministry of Rehabilitation Reintegration and Reconstruction
| Others |
| MRRR | Mixed Residue Reduction Report
| Others |
| MRRR | Mobility Requirement Resource Roster
| Others |
| MRRR | Monthly Recurring Revenue Representation
| Others |
| MRRR | Multiple Relatively Robust Representations
| Others |