Moderate cleric Hassan Rowhani was declared Iran's new President on Saturday, the Interior Minister said, in an outright election victory that ends eight years of conservative grip on the top office.
Rowhani, 64, a former top nuclear negotiator who has championed more constructive engagement with world powers, won outright with 18.6 million votes, or 50.68 per cent of those cast.
Announcing Rowhani's win, Interior Minister Mohammad Mostafa Najjar said 36.7 million people, or 72.7 per cent of the electorate, had voted on Friday.
More than 50.5 million Iranians had been eligible to vote for a successor to Mahmud Ahmadinejad, who was constitutionally barred from standing again after serving two consecutive terms.
Rowhani's tally was enough to ensure there would be no run-off against the runner-up, Tehran Mayor Mohammad Baqer Qalibaf, who was in
distant second place with 6.07 million votes. Current nuclear negotiator, Saeed Jalili, was third with 3.17 million votes.