The former president voted at the PWD Polling Station in the Klottey Korle Constituency.
Voting is ongoing in the 2016 Presidential and Parliamentary elections, after which a president and 275 Parliamentarians will be elected to govern the country for the next four years.
Nationwide voting started at 7:00am and will end at 5:00pm.
Over 15 million voters are expected to cast their ballot in the exercise which is taking place in some 29,000 polling stations across the country.