Samdech Hun Sen is a Cambodian politician, and former army general who currently serves as the president of the Senate. He previously served as the prime minister of Cambodia from 1985 to 2023. Hun Sen is the longest-serving head of government in Cambodia's history. He is the president of the Cambodian People's Party (CPP), which has governed Cambodia since 1979, and has served as a member of the Senate since 2024. His full honorary title is Samdech Akeakmohasenapadey Techo Hunsen.

The prime minister of Cambodia is the head of government of Cambodia. The prime minister is also the chairman of the Cabinet and leads the executive branch of the Royal Government of Cambodia. The prime minister is a member of parliament, and is appointed by the monarch for a term of five years. Since 1945, 37 individuals have served as prime minister; 33 as official prime ministers, and 4 in acting capacities. The current prime minister since 2023 is Hun Manet.