The 27th Machine-Gun Battalion was a unit of the 2nd New Zealand Division during the Second World War. It served in the Greek Campaign, Western Desert Campaign, Tunisian Campaign, Italian Campaign and after the war took part in the Occupation of Japan. It was one of two New Zealand formations that served overseas longer than any other unit in the New Zealand Expeditionary Force. The battalion was also one of the New Zealand units that supplied men for the Long Range Desert Group.