To be awarded the Republic of Vietnam Campaign Medal personnel must meet one of the following requirements:
- Served in the Republic of Vietnam for six months during the period of 1 March 1961 and 28 March 1973.
- Served outside the geographical limits of the Republic of Vietnam and gave direct support in battle to the Republic of Vietnam and Armed Forces for six months.
- Such individuals must meet the criteria established for the Armed Forces Expeditionary Medal (for Vietnam) or the Vietnam Service Medal, to qualify for the Republic of Vietnam Campaign Medal.
- Six months service is not required for those who were wounded by enemy forces; killed in action or otherwise in line of duty; or captured by enemy forces.