| MMRT | Madras Motor Race Track 
| Others |
| MMRT | Magicc Mobile Robot Toolbox
| Others |
| MMRT | Malakula Medical Relief Trust
| Others |
| MMRT | Malekula Medical Relief Trust
| Others |
| MMRT | Marbled Murrelet Recovery Team
| Others |
| MMRT | Marine Mammal Rescue Team
| Others |
| MMRT | Marquette Mountain Race Team
| Others |
| MMRT | Marquette Mountain Racing Team
| Others |
| MMRT | Master Mapping Reference Table
| Others |
| MMRT | Maternal Mortality Review Team
| Others |
| MMRT | Mean Message Response Time
| Others |
| MMRT | Medial Meniscus Root Tears
| Others |
| MMRT | Medicaid Medical Review Team
| Others |
| MMRT | Methodology of Mathematical Research Traditions
| Others |
| MMRT | Metro Mass Rapid Transit
| Others |
| MMRT | Metropolitan Medical Response Team
| Others |
| MMRT | Micky Morris Racing Team
| Others |
| MMRT | Microarray Multidisciplinary Research Team
| Others |
| MMRT | Midlands Medical Response Team
| Others |
| MMRT | Million Metric Revenue Tons
| Others |
| MMRT | Mississippi Mortuary Response Team
| Others |
| MMRT | Modified Miniature Rec Terminal
| Others |
| MMRT | Modified Miniature Receive Terminal
| Others |
| MMRT | Mourne Mountain Rescue Team
| Others |
| MMRT | Multi Master Recognition Technology
| Others |
| MMRT | Multi Mode Running Tools
| Others |