AMF

AMF can be:

 Action Message Format, a protocol for object remoting (or a Data serialization format)
 Additive Manufacturing File Format, a protocol for 3D printing
 Against Malaria Foundation, a charity
 Ameriflight, an airline with ICAO code AMF
 Amsterdam Music Festival, an EDM event originating in the Netherlands
 Ammanford railway station, National Rail code
 Arbuscular mycorrhizal fungi, a fungus symbiotic on vascular plant roots
 Arab Monetary Fund
 Asociación Mundial de Fútbol de Salón (World Futsal Association), an international futsal organisation
 Association for the Protection of Mixed Families' Rights
 Ama Airport in Ama, Papua New Guinea, IATA code AMF

α-Methylfentanyl, a fentanyl analogues (or a drug)