Emmanuel Macron has become the first French president in 20 years to win a second term after comfortably beating far-right challenger Marine Le Pen.
The final result announced by the Interior Ministry saw Mr Macron get 58.54% of the vote, compared with Ms Le Pen's 41.46%.
Five years ago, Mr Macron won a sweeping victory to become France's youngest president at 39.
Cheers erupted at the foot of the Eiffel Tower where supporters of the president celebrated his re-election on Sunday.
And in his victory speech, Mr Macron said he will be "president for all of us" in France.
"Many of our compatriots voted for me not out of support for my ideas but to block those of the extreme right.
"I want to thank them and I know that I have a duty towards them in the years to come.
"We will have to be benevolent and respectful because our country is riddled with so many doubts, so many divisions.
"No one will be left by the wayside. It will be up to us to work together to achieve this unity which will enable us to live happier lives in France.
"The years to come will certainly not be quiet, but they will be historic", he said.
Chacun d'entre nous compte plus que lui-même. C’est ce qui fait du peuple français cette force singulière que j'aime si profondément, si intensément, et que je suis si fier de servir à nouveau. pic.twitter.com/02EtTJVdis
— Emmanuel Macron (@EmmanuelMacron) April 24, 2022
Boos and whistles broke out at the campaign party of his challenger before she conceded defeat.
"Tonight's result is in itself an earth-shattering victory (for us)," she told her supporters.
"I fear that the five-year term that is about to begin will not break with the brutal methods of the previous one.
"In order to avoid the monopolisation of power by a few, more than ever I will pursue my commitment to France and the French people with the energy, perseverance and affection that you know me for."
Taoiseach Micheál Martin congratulated Mr Macron, and said he looks forward to "continuing to work together on the challenges ahead".
Congratulations @EmmanuelMacron on your re-election as President of France.
Your principled and dynamic leadership is important not only for France, but for Europe.
I look forward to us continuing to work together on the challenges ahead. pic.twitter.com/krXJx0Z8zK
— Micheál Martin (@MichealMartinTD) April 24, 2022
In a statement, Mr Martin said: "At a time when Europe faces many challenges, not least the war in Ukraine, it is important that we have a president in Paris who is as committed as he is to the fundamental values of the European Union and to its success.
"Throughout his first term in office, he has offered strong, decisive and principled leadership.
"I very much look forward to this continuing and to working closely with him in the coming years."
He added: "Most importantly, France and Ireland are strongly committed to the success of the European project which remains the bedrock of prosperity and well-being on our continent.
"With crisis on our borders, it is has never been more vital that we remain a beacon of democracy and of hope in our neighbourhood and to the world".
Foreign Affairs Minister Simon Coveney called it a "victory for Europe", adding that France is "our closest neighbour in the EU".
A victory for #Europe tonight!
Toutes nos sincères félicitations à @EmmanuelMacron pour sa victoire ce soir.
L’Irlande 🇮🇪 se réjouit de cinq années supplémentaires d’étroite collaboration avec la France 🇫🇷, notre plus proche voisin dans l’UE 🇪🇺 pic.twitter.com/fDUP89RLm3
— Simon Coveney (@simoncoveney) April 24, 2022
US President Joe Biden said he looked forward to continued close cooperation between the two countries "including on supporting Ukraine, defending democracy, and countering climate change".
Congratulations to @EmmanuelMacron on his re-election. France is our oldest ally and a key partner in addressing global challenges. I look forward to our continued close cooperation — including on supporting Ukraine, defending democracy, and countering climate change.
— President Biden (@POTUS) April 24, 2022
European Commission President Ursula von der Leyen said France and Europe will move forward together.
Cher @EmmanuelMacron, toutes mes félicitations pour votre réélection à la présidence de la République.
Je me réjouis de pouvoir continuer notre excellente coopération.
Ensemble, nous ferons avancer la France et l’Europe.
— Ursula von der Leyen (@vonderleyen) April 24, 2022
German Chancellor Olaf Scholz said Mr Macron's constituents "sent a strong commitment to Europe today."
Félicitations, herzliche Glückwünsche, lieber Präsident @EmmanuelMacron. Deine Wählerinnen und Wähler haben heute auch ein starkes Bekenntnis zu Europa gesendet.
Ich freue mich, dass wir unsere gute Zusammenarbeit fortsetzen! pic.twitter.com/ZJQSc6OAz9
— Bundeskanzler Olaf Scholz (@Bundeskanzler) April 24, 2022
While Ukrainian President Volodymyr Zelenskyy called Mr Macron "a true friend" of Ukraine.
"I appreciate his support and I am convinced that we are moving forward together towards new common victories. Towards a strong and united Europe", he said.
Félicitations à @EmmanuelMacron, un vrai ami de l’Ukraine, pour sa réélection! Je lui souhaite de nouveaux succès pour le bien du peuple 🇫🇷. J'apprécie son soutien et je suis convaincu que nous avançons ensemble vers de nouvelles victoires communes. Vers une Europe forte et unie!
— Володимир Зеленський (@ZelenskyyUa) April 24, 2022
And British Prime Minister Boris Johnson also sent his congratulations.
Congratulations to @EmmanuelMacron on your re-election as President of France. France is one of our closest and most important allies. I look forward to continuing to work together on the issues which matter most to our two countries and to the world.
— Boris Johnson (@BorisJohnson) April 24, 2022
Meanwhile riot police charged and sprayed tear gas on demonstrators in the central Paris neighbourhood of Chatelet.
Police sought to break up a crowd of mostly young people who had gathered to protest to result.
Mr Macron's next hurdle is only a few weeks away.
Parliamentary elections in June will define the make-up of the government Mr Macron must rely on to see through reform plans that would be an unprecedented shake-up of France's welfare state.
Newly-elected presidents can usually expect to get a majority in parliament whenever legislative elections directly follow the presidential vote, because of the generally low turnout among supporters of all the defeated candidates.
However in her concession speech, Ms Le Pen sounded defiant - promising a strong opposition bloc in parliament.
Additional reporting: IRN