MEK

MEK or Mek may refer to:
 * In chemistry and industry methyl ethyl ketone, a solvent, used also to weld some plastics
 * The Iranian guerilla-cum-opposition group Mujahideen-e Khalq
 * Mek, a comic mini series by Warren Ellis
 * In Hungary, the Magyar Elektronikus Könyvtár, a digital library
 * In cryptography, Message Encryption Key
 * The Mobiles Einsatzkommando, a special police unit in Germany
 * The MAPK/ERK kinases(MAP2Ks) (biology)
 * The Mek (tribe), an indigenous tribe of West Papua, Western New Guinea, Indonesia, featured in the Travel Channel reality series Living with the Mek: The Adventures of Mark and Olly.
 * The Mu Epsilon Kappa Society, an organization of anime clubs
 * Mek in Kelantanese means "little miss"
 * Mek, the title held by rulers of the Sultanate of Sennar

Also


 * MEKS, meaning Mi’kmaq Ecological Knowledge Study, a 2007 protocol governing certain types of development in Nova Scotia.