MF

MF, Mf, or mf could be an abbreviation for:

• Medium frequency
• mezzo-forte
• mossy fiber (in neuroscience)
• Multi-Frequency (in telephony)
• motherfucker
• Thousand Feet (MF) (an IT term for cable length; based on roman numeral M for Thousand and F for Feet)
• Mainframe
• M/F (a novel by Anthony Burgess)
• Magic Find (Magical attribute on the game Diablo 2 that determines -Based on a formula- how often you find magical items)