MK
- mk – (s) Macedonian language (ISO 639-1 code)
- mK – (s) Millikelvin
- MK
- (s) Air Mauritius (IATA code)
- Macedonia (ISO 3166 digram; FIPS 10-4 country code)
- (i) Mandalskameratene (Norwegian football club)
- (s) Megakelvin
- (i) Milton Keynes
- Missionary Kids
- Mortal Kombat (game)
- mkd – (s) Macedonian language (ISO 639-2 code)
- MKD
- (s) Macedonian denar (ISO 4217 currency code)
- Republic of Macedonia (ISO 3166 trigram)
- MKO – (i) Mojahedin-e-Khalq Organization (Persian, "People's Mujahedin of Iran")
- MKS
- (i) Metre–Kilogram–Second (system of units)
- (p) MKS Inc. software company
- MKSA – (i) Metre–Kilogram–Second–Ampere (system of units)
- MKT
- (i) Missouri-Kansas-Texas Railroad (1865–1989)
- Mortal Kombat Trilogy
Read more about this topic: List Of Acronyms And Initialisms: M