MF

Biology

MF Dow Jones News, an Italian financial news agency
MF Milano Finanza, an Italian business newspaper
MF Global (also Man Financial), a former finance company NYSE listed as MF
MF Norwegian School of Theology, Religion and Society
Massey Ferguson, an agricultural equipment company
Methuselah Foundation, a non-profit volunteer organization devoted to anti-aging research
Micro Focus, a software company
Minority Front, a South African political party
Mitsubishi Fuso Truck and Bus Corporation, a Japanese manufacturer of trucks and buses
- Mitsubishi Fuso Truck of America, Inc., a North American subsidiary
Mladá fronta DNES, a Czech newspaper
Musical Fidelity, a British high-end audio equipment manufacturer
Xiamen Airlines (IATA airline designator MF)
Muslims of France, a religious organization in France

M/F, a novel by Anthony Burgess
m/f: a feminist journal, a British feminist magazine
MF or M/F, ship prefix for a motor ferry
Megafarad (MF), an SI unit of electric capacitance
Millifarad (mF), an SI unit of electric capacitance
The prefix for steel-wheel rolling stock on the Paris Métro
Monday–Friday (M–F), abbreviation for the American workweek
Mandatory frequency airport, a non-towered airport that requires aircraft to communicate on a published frequency
Manual focus
Master of forestry
Mayotte, France (FIPS PUB 10-4 territory code MF)
Medium format (film), a size of camera
Medium frequency, radio transmissions between the frequencies of 300 kHz and 3000 kHz
Membership function, in control engineering, in fuzzy sets
Midfielder, a playing position in association football
Milk fat, on dairy product labels in Canada
Motherfucker, an insult
Mutual fund, in finance
Member of the Folketing