MK5

MK5 may refer to:


 * Mortal Kombat: Deadly Alliance, the fifth game in the Mortal Kombat series
 * Mario Kart DS, the fifth game in the Mario Kart series, released in 2005 for the Nintendo DS
 * MK5, an English postcode district
 * British Rail Mark 5 (CAF), a rolling stock designation in the United Kingdom
 * British Rail Mark 5A, a similar development of rolling stock in the United Kingdom