MFF
- Faculty of Mathematics and Physics, Charles University
- MAC-Forced Forwarding
- MFF (gene)
- MFF SIM
- Maasai Football Federation
- Malmö FF
- Manly Fast Ferry
- Maryland Film Festival
- Midwest FurFest
- Milan Film Festival
- Military Freefall Parachutist Badge
- Military free-fall
- Minffordd railway station
- Minnesota Freedom Fund
- Molecular Frontiers Foundation
- Mongolian Football Federation
- Montclair Film Festival
- Monégasque Football Federation
- Multiannual Financial Framework
- Myanmar Football Federation