Pol Pot, 1925–98, Cambodian political leader, originally named Saloth Sar. Paris-educated, and a Khmer Communist leader from 1960, he led Khmer Rouge guerrillas against the government of Lon Nol after 1970. In 1975 he proclaimed the Democratic Republic of Kampuchea and served as its premier (1976–79). The systematic murder of members of various groups; the complete destruction of individual rights; forced labor, disease, and starvation in Cambodia's "killing fields"; the transformation of a developing country into a xenophobic agrarian society; and other horrors that can be ascribed to the cruelty or ineptitude of Pol Pot made him one of the most infamous leaders in modern history. Some 1.5 million out of a total population of about 7 million died during his rule, which ended with an invasion by the Vietnamese in late 1979. Although he retired officially in 1985, Pol Pot continued to control his guerrillas, the strongest antigovernment force, in western jungle areas of Cambodia until factional collapse shortly before his death.
See biographies by D. Chandler (1992, rev. ed. 1999) and P. Short (2005); study by B. Kiernan (2d ed. 2002).