MF
- M/F
- MF Doom
- MF Dow Jones News
- MF Global
- MF Grimm
- MF Milano Finanza
- MF Norwegian School of Theology, Religion and Society
- Mainframe computer
- Making Fiends (TV series)
- Mandatory frequency airport
- Manual focus
- Massey Ferguson
- Maynard Ferguson
- Mayotte
- MediaFire
- Medium format (film)
- Medium frequency
- Megafarad
- Melodifestivalen
- Member of the Folketing
- Membership function
- Metafont
- Methuselah Foundation
- Metroid Fusion
- Mezzo forte (musical notation)
- Micro Focus
- Microfibril
- Midfielder
- Milk fat
- Millifarad
- Minority Front
- Miss Fortune (disambiguation)
- Mitsubishi Fuso Truck and Bus Corporation
- Mitsubishi Fuso Truck of America, Inc.
- Mladá fronta DNES
- Modern Family
- Monster Force
- Mossy fiber (disambiguation)
- Motherfucker
- Mozilla Firefox
- Multi-frequency
- Murder Family
- Musical Fidelity
- Muslims of France (organization)
- Mutual fund
- My Friend (disambiguation)
- Mycosis fungoides
- Myelofibrosis
- Mylène Farmer
- Paris Métro
- Saint Martin (France)
- Workweek and weekend
- Xiamen Airlines