Prince Phetsarath Ratanavongsa (Somdej Chao Maha Uparaja Petsaraj Ratanavongsa was the 1st Prime Minister of Luang Phrabang in French Laos from 21 August 1941 to 10 October 1945, and Head of State of Laos between 12 October 1945 and 4 April 1946.

The Prime Minister of the Lao People's Democratic Republic, formerly the chairman of the Council of Government of the Lao People's Democratic Republic, is the head of government of Laos. The highest position in the government, they direct the country's executive branch. The prime minister is accountable to the president, the National Assembly and the country's only legal party: the Lao People's Revolutionary Party (LPRP). The current prime minister is Sonexay Siphandone, who was elected in 2022.