President John Mahama is due to be sworn into office following the swearing in of the 6th Parliament of the 4th Republic.
Mr Mahama, who became acting president in July, has called for unity ahead of the inauguration, appealing to rivals who contested the 7 December result.
Mr Mahama won 50.7% of the vote in last month's election enough to avoid a run-off against opposition candidate Nana Akufo-Addo, who won 47.7%.
The New Patriotic Party led Nana Akufo-Addo is expected to boycott the ceremony after it filed a petition at Supreme Court to protest the results.
Mr Mahama was Ghana's vice-president until the unexpected death of President John Atta Mills in July.
Mr Mahama is due to be sworn in before 13 African heads of state. Officials from the US, China and the UK will also be there.
Mr Mahama's National Democratic Congress (NDC) said the elections were the most transparent the country had seen.
International election observers have also described the 7 December poll as free and fair. Ghana's government says the presence of international leaders at Monday's ceremony is an endorsement of the vote.