Hun Sen – one of the world's longest-serving leaders – announced he was stepping down as prime minister and handing power to his eldest son Hun Manet.
On Monday, following a request from Hun Sen, King Norodom Sihamoni issued a royal decree stating that he "appoints Dr. Hun Manet as the prime minister of the Kingdom of Cambodia for the 7th mandate of the parliament".
However, to officially become the country's next leader, the 45-year-old and his cabinet must win a confidence vote in parliament set for August 22.
July's election were widely decried as a sham after the main opposition challenger, the Candlelight Party, was barred from running over a technicality, with the ruling Cambodian People's Party (CPP) winning all but five seats in the 125-member lower house, reports France24.com.
The incoming government will usher in a crop of young ministers – with some taking posts vacated by their fathers.
While insisting he would not interfere with his son's rule, Hun Sen has also promised Cambodians that he will continue to dominate the country's politics.
Bd-pratidin English/Golam Rosul