| Acronym | Definition |
|---|
| MRR | Material Removal Rate |
| MRR | Master Resale Rights |
| MRR | Machine Robo Rescue (Japanese television series) |
| MRR | Ministerstwo Rozwoju Regionalnego (Polish: Ministry for Regional Development) |
| MRR | Modern Rock Radio |
| MRR | Metal Removal Rate (machining) |
| MRR | Mystic Revelation of Rastafari (band) |
| MRR | Model Railroader Magazine |
| MRR | Manchester Road Race (Manchester, CT) |
| MRR | MyRealRacing (forum) |
| MRR | Maximum Rock'n'Roll (print zine) |
| MRR | Monthly Recurring Revenue |
| MRR | Major Repair and Renewal (US Army) |
| MRR | Minnesota Road Research (Department of Transportation) |
| MRR | Mandatory Reporting Rule (US EPA) |
| MRR | Minimum Reporting Requirement (various locations) |
| MRR | Mean Reciprocal Rank |
| MRR | Mark Release Recapture (animal population studies) |
| MRR | Mission Readiness Review |
| MRR | Minimal Risk Region (USDA) |
| MRR | Material Receipt Report (energy exploration) |
| MRR | Market Research Reports |
| MRR | Minimum Rediscount Rate |
| MRR | Marginal Rate of Return |
| MRR | Monitoring, Recordkeeping, and Reporting |
| MRR | Medication Regimen Review (pharmaceutical) |
| MRR | Motorized Rifle Regiment |
| MRR | Minnesotans for Responsible Recreation (Duluth, MN; est. 1996) |
| MRR | Medium Range Radar |
| MRR | Multi-Role Radio |
| MRR | Manufacturing Readiness Review |
| MRR | Management Research Report |
| MRR | Minimum Risk Route |
| MRR | Maintenance Replacement Rate |
| MRR | Measurement Residual Ratio |
| MRR | Maintenance Readiness Review (US Army) |
| MRR | Multiple Reporting Record (US Department of Education) |
| MRR | Medical Readiness Review |
| MRR | Modular Range Reduction (computing) |
| MRR | Mission Requirements Request |
| MRR | Maritime Radar Reconnaissance |
| MRR | Mission Requirements Review |
| MRR | Material Receiving Report |
| MRR | Minimum Reserve Requirements |
| MRR | Multi-Role Radar |
| MRR | Mad River Rocket (Sled Company; Warren, VT) |
| MRR | Minimum Residual Radioactivity |
| MRR | Material Review Report |
| MRR | Mechanical Reliability Report |
| MRR | Material Recovery Rate |
| MRR | Materiel Readiness Report |
| MRR | M.R. Radha (Indian actor) |
| MRR | Microfilm Reduction Ratio |
| MRR | Milestone Readiness Review |
| MRR | MacRitchie Reservoir (Singapore) |
| MRR | Mary Rolph Resources |
| MRR | Management Recommendation Report |
| MRR | Motivation Recognition and Rewards (human resources) |