MIK could refer to:
- Methyl isopropyl ketone, a solvent
- Micklefield railway station, England; National Rail station code MIK.
- FC MiK Kaluga - (FC Kaluga)
- MIK Code page
- Mikkeli Airport, Finland; IATA airport code MIK.
- Multiple-indicator kriging
- Montazhno-Ispytatelnyi Kompleks - the name of the assembly-test facility for the space vehicles in the Russian space program.