Kampuchean National United Front for National Salvation

Kampuchea United Front for National Salvation (KUFNS) រណសិរ្សសាមគ្គីសង្គ្រោះជាតិកម្ពុជា Front Uni National pour le Salut du Kampuchéa (FUNSK)
Emblem of the KUFNS at the former head office in Phnom Penh
Dates of operation	2 December 1978
Motives	Overthrowing the Khmer Rouge state and establishing the PRK
Active region(s)	Cambodia
Ideology	Communism Marxism–Leninism Pro-Vietnam Pro-Soviet
Notable attacks	Invasion of Cambodia
Status	Transformed into the Solidarity Front for Development of the Cambodian Motherland (2006 – present)

The Kampuchea (or Khmer) United Front for National Salvation (Khmer: រណសិរ្សសាមគ្គីសង្គ្រោះជាតិកម្ពុជា; KUFNS), often simply referred to as Salvation Front or by its French acronym FUNSK (Front Uni National pour le Salut du Kampuchéa), was the nucleus of a new Cambodian regime that would topple the Khmer Rouge and later establish the People's Republic of Kampuchea (PRK).

Its foundation took place on 2 December 1978 in Kratié Province near the border with Vietnam at a meeting of seventy dissident Cambodians determined to overthrow Pol Pot's government. Heng Samrin was voted as leader of the front and within a few weeks its influence spread widely on both sides of the border. The front was a heterogeneous Cambodian politico-military organization that legitimized the Vietnamese invasion of Cambodia, precipitating the ensuing defeat of the Khmer Rouge's Democratic Kampuchea. It brought about the foundation of the new state named 'People's Republic of Kampuchea' and the reconstruction of the shattered and desperately impoverished country. This organization has undergone various name changes as it has expanded and adapted to the different historical realities in Cambodia.

Politically the Salvation Front (FUNSK) was a pro-Hanoi umbrella organization of the Marxist Kampuchean People's Revolutionary Party (KPRP) opposed to the Communist Party of Kampuchea —also known as the Angkar. The original FUNSK group was formed within Cambodia in an area around Kratie that had been liberated from the Khmer Rouge by Cambodian Communists and Khmer Rouge defectors. The latter didn't share Pol Pot's growing personality cult and his increasingly anti-Vietnamese policies. Many felt personally threatened by the bloody purges in Eastern Cambodia in 1977, especially after So Phim's murder at the hand of members of the pro-Pol Pot faction.