MEK
| Acronym | Definition |
|---|---|
| MEK | Methyl Ethyl Ketone |
| MEK | Mujahadeen-e-Khalq (Iranian organization) |
| MEK | Marine Engineering Knowledge |
| MEK | Mojahedin-E Khalq Organization (Iran) |
| MEK | Mobiles Einsatzkommando (German: Mobile Police Force) |
| MEK | Memory Extension Kit |
| MEK | Message Encryption Key |
| MEK | Mars Expeditionary Complex (Russian space exploration) |