PMF may stand for:

• Paramilitary forces, a semi-militarized force
• Private military firm, a private company providing armed combat or security services for financial gain.
• Popular Mobilization Forces, an Iraqi state-sponsored umbrella organization

• Peptide mass fingerprinting, an analytical technique for protein identification
• Polarization-maintaining optical fiber, a type of optical fiber
• Polycarbon monofluoride, a graphite compound with fluorine; also known as carbon monofluoride
• Potential of mean force, in chemistry, potential giving the average force on a particle from a set of molecules
• Primary myelofibrosis, a disease affecting the bone marrow
• Probability mass function, in statistics, function giving the probability that a variable takes a particular value
• Progressive massive fibrosis, an interstitial lung disease complication often seen in silicosis and pneumoconiosis
• Protected Management Frames, a security feature of WiFi connections, see IEEE 802.11w-2009
• Proton motive force, a measure of energy in biological reactions

• Danish Union of Educators (Danish: Pædagogisk Medhjælper Forbund), a former Danish trade union
• Pacific Music Festival, an international classical music festival held annually in Sapporo, Japan
• Parma Airport, Italy (IATA airport code)
• Pierre Mendès France (1907–1982), Prime Minister of France
• Presidential Management Fellows Program, a US government fellowship
• Product/market fit, in marketing, the degree to which a product satisfies a strong market demand
• Professional Medical Film, a U.S. Army designation
• PMF, hacker turned as federal informant (operation Cybersnare)
• .pmf, a Sony PlayStation Portable movie file, a proprietary format that can be extracted from PSP disk images