The Kampuchean People's Revolutionary Armed Forces (KPRAF), also the Khmer People's Revolutionary Armed Forces were the armed forces of the People's Republic of Kampuchea, the de facto government of Cambodia 1979–1990. It was formed with military assistance from Vietnam, which furbished the fledgling armed forces with equipment and training, with the initial task of countering the sustained guerrilla campaign being waged by the Coalition Government of Democratic Kampuchea.

The People's Republic of Kampuchea (PRK) was a partially recognised state in Southeast Asia which existed from 1979 to 1989. It was a client state of Vietnam, founded in Cambodia by the Vietnamese-backed Kampuchean United Front for National Salvation, a group of Cambodian communists who were dissatisfied with the Khmer Rouge due to its oppressive rule and defected from it after the overthrow of Democratic Kampuchea, Pol Pot's government. Brought about by an invasion from Vietnam, which routed the Khmer Rouge armies, it had Vietnam and the Soviet Union as its main allies.