Mek or Mek may refer to: Mek people, an indigenous tribe of West Papua, Indonesia Mek languages, a family of Papuan languages spoken by the Mek peoples Mek (comics), a comic mini series by Warren Ellis MEK Compound, in Fallujah, Iraq, a compound used by the U.S. military from 2003 to 2009 Master encryption key, a type of key in cryptography Methyl ethyl ketone or butanone, a solvent, used also to weld some plastics Mitogen-activated protein kinase kinase, an important enzyme in biochemical MAPK/ERK pathways Mu Epsilon Kappa Society, an organization of anime clubs Meelo Evaru Koteeswarudu, a Telugu television show Magyar Elektronikus Könyvtár or Hungarian Electronic Library, a digital library Mojahedin-e Khalq or People's Mujahedin of Iran, an exiled Iranian organization Mobile Einsatzkommandos, German police special units Mek, variant of Makk, a royal title used in the Sudan Language and nationality disambiguation pages