| MRRS | Macon Ridge Research Station
| Others |
| MRRS | Management Resources and Results Structures
| Others |
| MRRS | Market Research Reports Services
| Others |
| MRRS | Marlboro Red Racing School
| Others |
| MRRS | Medical Readiness and Reporting System
| Others |
| MRRS | Medical Readiness Reporting System
| Others |
| MRRS | Medical Record Retention
| Others |
| MRRS | Medical Record Retention System
| Others |
| MRRS | Medical Record Review Survey
| Others |
| MRRS | Membership Registration Receivables System
| Others |
| MRRS | Metrowest Radio Reading Service
| Others |
| MRRS | Michigan Recession and Recovery Study
| Others |
| MRRS | Mission Records Retention Schedules
| Others |
| MRRS | Mission Reliability Reporting System
| Others |
| MRRS | Mobile Remote Receiving System
| Others |
| MRRS | Mobile Rescue Rehabilitation Service
| Others |
| MRRS | Modified Reciprocal Recurrent Selection
| Others |
| MRRS | Modular Reclamation And Reuse System
| Others |
| MRRS | Multi Role Radar
| Others |
| MRRS | Multi Role Radar System
| Others |
| MRRS | Multiple Role Radar System
| Others |
| MRRS | Mutual Reliance Review System
| Others |