Mr Macron won the second round of voting last Sunday
Emmanuel Macron has been inaugurated as his France's youngest ever president in a ceremony at the Elysee Palace in Paris.
The centrist leader of Republique en Marche was greeted on the steps of the Presidential residence by outgoing head of state Francois Hollande.
Shortly before his wife Brigitte had arrived, just behind her daughter and Mr Macron's stepdaughter Tiphaine Auziere.
After the ceremony was over, Mr Macron accompanied Mr Hollande as he walked to his vehicle in the palace forecourt and drove away as the new president waved him off.
A source close to the president has told Reuters that his prime minister will be appointed on Monday.
The remainder of his government will be announced on Tuesday, the source said.
At the ceremony Laurent Fabius, head of France's Constitutional Council, announced the official election results before Mr Macron was presented with the medal of the Grand Master of the National Order of the Legion of Honour.
This marked the official beginning of his presidency.
Speaking after the inauguration ceremony, Mr Macron said France had chosen "hope".
He went on to promise that the beleaguered European Union would be "reformed and relaunched" during his time in office.
He said: "The division and fractures in our society must be overcome.
"The world and Europe need more than ever France, and a strong France, which speaks out loudly for freedom and solidarity."
Mr Macron won the second round of voting last Sunday, gaining 66% of the vote and beating far-right candidate Marine Le Pen.
Earlier, Mr Macron was handed France's nuclear codes, putting him in charge of what will be the EU's only arsenal of atomic weapons after Brexit is complete.
He was brought to the palace in a Renault Espace - quelling intense speculation in the French press over whether he would choose Renault or their longtime rival and now sister firm Citroen.
A source has also revealed that he is expected to visit French troops deployed abroad at the end of his first week as President, probably in Mali.
He has already appointed Alexis Kohler, who was his chief of staff when he was economy minister, as his secretary general, who will act has his chief administrator.
Philippe Etienne, a former ambassador to Berlin, will act as his diplomatic adviser.