The election results were announced on 9 December 2016 due to a delay of voting in two areas.
At 20:45, the Electoral Commission declared that Akufo-Addo had defeated Mahama in a single round.
Eligible voters must be Ghanaian citizens aged 18 or over, although those declared insane are disenfranchised.
The disqualified candidates included former first lady Nana Konadu Agyeman Rawlings, the president of the National Democratic Party.
However, the presidential candidate of the Progressive People's Party (PPP) Paa Kwesi Nduom took the EC to court over his disqualification.
Ivor Greenstreet from the Convention People's Party was the first physically challenged candidate to contest a presidential election.