MRF
- Elseng language
- Fjord1 MRF
- MRF (company)
- MRF Challenge
- MRF Pace Foundation
- Macomb Correctional Facility
- Magnetic resonance fingerprinting
- Magnetorheological finishing
- Magnetorheological fluid
- Maldivian rufiyaa
- Marfa Airport
- Markov random field
- Materials recovery facility
- Media Resource Function
- Medical Response Force
- Midbrain reticular formation
- Military Reaction Force
- Mississippi River Festival
- Missouri Reserve Force
- Mobile Riverine Force
- Moorfields railway station
- Morgellons Research Foundation
- Mountain River Films
- Movement for Rights and Freedoms
- Multiprogram Research Facility
- Multirole fighter
- Myanmar Rice Federation
- Myelin Repair Foundation
- Myelin gene Regulatory Factor
- Myogenic regulatory factors
- Pakistan Aeronautical Complex
- Visit, board, search, and seizure