| Acronym | Definition |
|---|
| MRT | Mauritania (ISO Country code) |
| MRT | Mass Rapid Transit |
| MRT | Magnetic Resonance Tomography |
| MRT | Metro Rail Transit (Philippines) |
| MRT | Mountain Rescue Team |
| MRT | Midland Reporter Telegram (Midland, TX, USA) |
| MRT | mean residence time (pharmacokinetics) |
| MRT | Muscle Response Testing |
| MRT | Multi-Threaded Routing Toolkit |
| MRT | Marginal Rate of Transformation |
| MRT | Mental Retardation |
| MRT | Medical Radiation Technologist |
| MRT | Mean Radiant Temperature |
| MRT | Mobile Radio Technology (magazine) |
| MRT | Mineral Resources Tasmania |
| MRT | Modified Rhyme Test |
| MRT | Mobile Response Team (law enforcement; disaster preparedness; public health) |
| MRT | Mean Repair Time |
| MRT | Medical Response Technician |
| MRT | Mean Response Time |
| MRT | Master Reading Teacher |
| MRT | Magnetic Resonance Therapy |
| MRT | Museum of Radio and Technology (Huntington, West Virginia) |
| MRT | Medical Response Team |
| MRT | Medical Radiologic Technology |
| MRT | Minimum Resolvable Temperature |
| MRT | Medium Range Target |
| MRT | Miniature Receive Terminal |
| MRT | Mission Readiness Test |
| MRT | Mishap Response Team (NASA) |
| MRT | Mobile Radio Telephone |
| MRT | Maximal Ratio Transmission |
| MRT | Master Reference Terminal |
| MRT | Maintenance Recovery Team |
| MRT | Air Mauritanie, Mauritania (ICAO code) |
| MRT | Medical Regulating Team |
| MRT | Multi-Rotational Trebuchet |
| MRT | Middle-Range Theory (archaeology) |
| MRT | Magnetic Resonance Technologist |
| MRT | Military Rated Thrust |
| MRT | Mission Rehearsal Training |
| MRT | Movement Regulating Team |
| MRT | Medizinische Resonanz Therapie |
| MRT | Maintenance Response Team (railway crew) |
| MRT | Management Responsibility Transfer |
| MRT | Medical Record Transcriptionist |
| MRT | Master of Respiratory Therapy |
| MRT | Maintainability Review Team |
| MRT | Mine Risk Reduction Teams |
| MRT | Metropolitan Rapid Transport (Taipei) |
| MRT | Military Ruggedized Tablet |
| MRT | Missile Round Transporter |
| MRT | Monster Race Track (game) |
| MRT | Mean Restoral Time |
| MRT | Multiple Requests Terminal |
| MRT | Maintenance Requirement Substantiated |
| MRT | Mean Resolvable Temperature |
| MRT | Master in Recreation and Tourism |
| MRT | Mission Real-Time |
| MRT | Manpower Requirements Team |
| MRT | Manpower Restructuring Team |
| MRT | Model Reference Test |
| MRT | Manpack Receive Terminal |
| MRT | Material Readiness Test |
| MRT | Materiel Routing Tool |
| MRT | Material Request Transaction |