Argentine Cardinal Jorge Mario Bergoglio,76, has been elected the Roman Catholic Church's new Pope.
The first Latin American to be Pope, he will call himself Francis.
Cardinal Bergoglio replaces Benedict XVI, who resigned last month saying he was not strong enough to lead the Church.
The 115 cardinals have been in isolation since Tuesday afternoon, and held four inconclusive votes.
At least 77 of them, or two-thirds, would have had to vote for a single candidate for him to be elected Pope.