Cuba’s parliament has picked Miguel Díaz-Canel as the sole candidate to succeed Raúl Castro, 86, bringing the family’s decades-long rule to an end.
Mr Castro took over as president from his ailing brother Fidel in 2006.
The National Assembly, the country’s legislative body, will vote on the nomination but Mr Díaz-Canel is almost certain to be confirmed.
Mr Castro is expected to remain a powerful influence in the communist state even after he steps down.
He will stay on as the head of the Communist Party until its next congress in 2021.
But he will formally pass the presidency to Mr Díaz-Canel after the announcement of the National Assembly’s vote on Thursday.
The next Cuban leader will inherit a country in economic stagnation and with a young population impatient for change, BBC Cuba correspondent Will Grant reports.
There is also the complex task of leading without the same revolutionary past as the predecessors.