The Vietnam Technical Service Medal was a decoration of the Republic of Vietnam that was awarded between the years of 1964 and 1972 during the years of the Vietnam War. Also known as the Republic of Vietnam Technical Service Honors Medal, the Technical Service Medal was bestowed in two classes, one for issuance to commissioned officers and the other class for warrant officers and enlisted personnel. The award appeared as a propellered disc suspended from a blue-grey ribbon. The second class version contained two vertical red lines while the first class medal displayed an additional set of thin red lines down the center of the award ribbon.