Republic of Korea War Service Medal was introduced by South Korea in 1951 to recognise the assistance provided by members of the United Nations forces in combatting communist aggressions in Korea.

During the Korean War, Australia used the Imperial Honours and Awards System and was therefore subject to the award policies set by the United Kingdom at the time. The regulations of the day did not permit the acceptance or wearing of this medal by British Commonwealth military personnel.

Following a campaign by the Australian Council of Korea Veterans Associations, a new offer of the medal was made by the South Korean government which was accepted, and approved for wear, by the Governor-General in 2017.