MFF may refer to:
Events Maryland Film Festival, Baltimore, US Midwest FurFest, a furry convention in Illinois, US Milan Film Festival, a film festival in Milan, Italy Montclair Film Festival, Montclair, New Jersey, US
Organisations and companies Faculty of Mathematics and Physics, Charles University (), Prague, Czech Republic Manly Fast Ferry, ferry operator in Sydney, Australia Minnesota Freedom Fund, a non-profit for bail fund in the US Molecular Frontiers Foundation, a non-profit chemistry organization, Sweden
Football Malmö FF, a Swedish football club Monégasque Football Federation, governs football in Monaco Mongolian Football Federation, governs football in Mongolia Myanmar Football Federation, governs football in Myanmar Maasai Football Federation, governs football for the Maasai people
Science and technology MFF (gene), encodes the protein mitochondrial fission factor MFF SIM, SIM cards for machine use
Other uses Minffordd railway station (station code), Wales Military free-fall, in parachuting Military Freefall Parachutist Badge, a badge of the U.S. Army Multiannual Financial Framework, a budget plan of the European Union Music, Fashion, Film, 2026 album by Charli xcx
See also MAC-Forced Forwarding (MACFF), a networking technology