Norodom Sihanouk (31 October 1922 – 15 October 2012) was the King of Cambodia from 1941 to 1955 and again from 1993 until 2004. He was the effective ruler of Cambodia from 1953 until 1970. After his second abdication in 2004, he was known as The King-Father of Cambodia, a position in which he retained many of his former responsibilities as constitutional monarch.

The son of King Norodom Suramarit and Queen Sisowath Kossamak, Sihanouk held so many positions since 1941 that the Guinness Book of World Records identifies him as the politician who has served the world's greatest variety of political offices. These included two terms as king, two as sovereign prince, one as president, two as prime minister, as well as numerous positions as leader of various governments-in-exile. He served as puppet head of state for the Khmer Rouge government in 1975–1976.