Angolan President João Manuel Gonçalves Lourenço was inaugurated in the Angolan capital Luanda on Tuesday.
His inauguration was attended by President Jacob Zuma and other heads of state.
The Angolan foreign affairs ministry said as many as 26 heads of state, including Russian President Vladimir Putin, British Prime Minister Teresa May, Egyptian President Abdel Fattah el-Sisi and Prime Minister of India Narendra Modi, had been invited to the inauguration.
The ruling Popular Liberation Movement of Angola won last month’s elections securing the majority of the vote.
Lourenco, 63, took over on Tuesday from Jose Eduardo dos Santos, who ruled the former Portuguese colony for 38 years.
The Portuguese news agency Lusa said thousands of people were on hand for the inauguration, which ended with a military parade and a 21-gun salute.
Equatorial Guinea’s Teodoro Obiang Nguema was present at the ceremony, along with President Paul Kagame of Rwanda, Democratic Republic of Congo President Joseph Kabila, South African President Jacob Zuma and other African leaders.
The People’s Movement for the Liberation of Angola (MPLA) has governed since Angola’s hard-fought independence from Portugal in 1975, with Dos Santos taking power in 1979.