Japan's parliament on Sept 16 elected Yoshihide Suga as the country's new prime minister.
He is a close ally of Shinzo Abe, who suddenly resigned from the post of Prime Minister last month citing ill health.
After winning the leadership of the governing party earlier this week, today's (Sept 16) vote confirms the position of Suga, the former chief cabinet secretary.
The new prime minister is expected to continue his predecessor's policies.
Earlier on Wednesday, Mr Abe held his final cabinet meeting and told reporters he was proud of his achievements during his nearly eight years in power.
Mr Suga then easily won a poll for prime minister in the Diet, Japan's lower house, receiving 314 out of 462 votes.
Given that a coalition headed by his conservative Liberal Democratic Party (LDP) holds the majority in the house, his win was widely expected.
Along with his new cabinet he will later be ceremonially endorsed by the emperor at the Imperial Palace.
Mr Suga has served for years as chief cabinet secretary, the most senior role in government after the prime minister.
He has already promised to carry on much of the previous administration's agenda, including the economic reform programme dubbed Abenomics.