Hun Sen, who has ruled the country for nearly four decades, is passing the baton to his eldest son. This follows confirmation of a landslide election victory last month in a vote decried as a sham.
Hun Sen has ruled the Southeast Asian country for almost four decades. The move comes after his party was victorious in parliamentary elections.
In power for almost 40 years, Cambodian Prime Minister Hun Sen is Asia's longest-serving leader. In the run-up to the country's nationwide election, he is expected to maintain a dynasty by allowing his son to take over.
Cambodia's authoritarian prime minister and his party face little opposition in upcoming elections and access to free media in the country remains restricted.