The Vietnam Service Medal is a military award which was created in 1965 by order of President Lyndon B. Johnson. The medal is issued to recognize military service during the Vietnam War and is authorized to service members in every branch of the U.S. Armed Forces.

The Vietnam Service Medal is presented to any service member who served more than thirty consecutive days, or 60 non-consecutive days, in the Republic of Vietnam between the dates of November 15, 1961 and March 28, 1973.