MAF may refer to:

• Myanmar Air Force
• Malaysian Armed Forces
• Marine Amphibious Force, a former name for Marine Expeditionary Force, a type of U.S. Marine Corps task force

• Majid Al Futtaim Group
• Move America Forward
• Mission Aviation Fellowship

• MAF (gene)
• Minor allele frequency in genetics
• Methoxyacetylfentanyl, an opioid analgesic
• Macrophage-activating factor
• Moisture and Ash Free, a measure of moisture and ash content as used in ranking coals or the heat-content of wood
• Million acre-foot, MAF, a unit of volume commonly used in the United States in reference to large-scale water resources

• Malaysia Athletics Federation
• Metin-Ali-Feyyaz, Turkish football trio who constituted attacking line of Turkish sports club Beşiktaş J.K.
• Marc-André Fleury (born 1984), Canadian ice hockey goaltender in the National Hockey League

• Mass airflow sensor, used to find the mass flowrate of air entering a fuel-injected internal combustion engine
• MAFless Tuning, a method of operating the fuel injection system on a gasoline-powered motor vehicle whereby the mass airflow meter is removed
• Markranstädter Automobilfabrik, a German car-brand built from 1909 to 1923 in Markranstädt
• Mozilla Archive Format, a format for archiving web pages and also an add-on of the same name for Mozilla Firefox
• Magnetic field-assisted finishing
• Microsoft Access Form, a file format associated with Microsoft Access, bearing the file extension .maf

• New Zealand Ministry of Agriculture and Forestry
• Saint Martin (France), ISO 3166-1 alpha-3 country code
• Midland International Airport, whose IATA code is MAF
• Michoud Assembly Facility, a NASA manufacturing facility 14 miles outside New Orleans, Louisiana