MK1 may refer to:
*
Mark I (disambiguation)
Mark I or Mark 1 often refers to the first version of a weapon or military vehicle, and is sometimes used in a similar fashion in civilian product development. In some instances, the Arabic numeral "1" is substituted for the Roman numeral "I". " ...
, a first version of a product, frequently military hardware
*
Volkswagen Golf Mk1, first-generation Volkswagen Golf
*
Eagle Mk1, also known as the Eagle T1G, a Formula One racing car
*
''Mortal Kombat'' (1992 video game), the first game in the ''Mortal Kombat'' series
* MK1, a postcode in the
MK postcode area
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