MK or mk may refer to:
In arts and entertainment
Video games
- Makai Kingdom: Chronicles of the Sacred Tome, a tactical role-playing game
- Mario Kart, a series of racing video games developed and published by Nintendo featuring characters from the Mario franchise
- Meta Knight, a character from the Kirby video game series
- Mortal Kombat, a series of fighting video games developed and published by Midway Games, and later Warner Bros.
- Mushroom Kingdom, the primary setting of the Super Mario video game series
- Monster Kid, a character from the video game Undertale
Other uses in arts and entertainment
- MK (channel), a South African Afrikaans-language music channel
- Moon Knight, a Marvel Universe superhero
Fictional characters
- M.K., a fictional character from the AMC TV series Into the Badlands.
- Mary Katherine "M.K." Bomba, the protagonist in the 2013 computer-animated adventure film Epic.
In business
- Markup (business), a term for the difference between the cost of a good or service and its selling price
- Air Mauritius (IATA designator MK)
- MK Group, a Serbian holding company
- MK Electric, an English manufacturer of electrical goods
- Mysore Kirloskar, an Indian manufacturer of lathes, part of the Kirloskar Group
- Morrison-Knudsen, an engineering and construction firm
- Moskovskij Komsomolets, a Russian newspaper
- MK Airlines, a British cargo airline
People
- MK Nobilette, also Emkay, (born 1994), American singer
- M. K. Asante (born 1982), American author, filmmaker and professor
- Marc Kinchen (MK), American house-music producer
- Mark Knopfler (born 1949), English musician, co-founder of Dire Straits
- Michael Kors (born 1959), American fashion designer
- Michael Kors (brand), American fashion brand
Places
- MK postcode area, UK postal districts in the greater Milton Keynes and Bedford areas
- North Macedonia (ISO country code MK)
- .mk, the Internet country code top-level domain for North Macedonia
- Macedonian language (ISO 639 digram "mk")
- Magic Kingdom, a Walt Disney World theme park in Greater Orlando
- Mong Kok, an area of Hong Kong with the highest population density in the world
- Mong Kok East station, originally Mong Kok KCR Station
- Mong Kok station
- Milton Keynes, a town in southern England
- Morris Knolls High School, a high school in Morris County, New Jersey
- Magic Kingdom, Sydney, a defunct theme park in Australia
In politics
- Member of Knesset, the legislature of Israel
- Umkhonto we Sizwe (Spear of the Nation), an armed wing of the African National Congress (the majority party in South Africa)
- Mebyon Kernow, a Cornish political party in the United Kingdom
Titles
- Machinery Technician, an enlisted rating in the United States Coast Guard
- Mk, a post-nominal title for a monk
- Member of Knesset (the legislature of Israel)
In science, technology, and mathematics
- Mark (designation), a designation used to identify versions of a product or item, e.g. Mk. II
- mk (software), a make replacement in the Plan 9 from Bell Labs and Inferno operating systems
- Mk reference point, an interface of the IP Multimedia Subsystem used to exchange messages between BGCFs in different networks
- Morgan-Keenan (MK) spectral classification, a stellar classification system based on spectral lines
- Megakelvin (MK), an SI unit of temperature
- Midkine, a protein
- Millikelvin (mK), an SI unit of temperature
- Morse–Kelley set theory in the field of mathematics
In sport
- FK Mandalskameratene, a Norwegian football club
- Milton Keynes Dons F.C., a football team in Milton Keynes often shortened to MK Dons
Other uses
- Chrysler MK platform (Jeep Compass and Jeep Patriot)
- Finnish markka, the official currency of Finland from 1860 to 2001
- Gospel of Mark, the second book of the New Testament in the Christian Bible
- Missionary Kids, the children of missionary parents
- Middle Korean (10th–16th centuries)
- Medical kit, a first aid kit, Individual First Aid Kit