Aleksander Ceferin has been elected as the new president of Uefa, European football's governing body.Ceferin, head of the Football Association of Slovenia, polled 42 votes at Uefa's congress in Athens, 29 more than Dutchman Michael van Praag.
The 48-year-old succeeds former France international Michel Platini, who resigned after being banned from all football activity last year.
Ceferin will take on the remainder of Platini's term of office, until 2019.
"It is a great honour, but also a great responsibility," he said.
"It means a lot to me. My small and beautiful Slovenia is very proud of it, and I hope that one day you will also be proud of me."
Ceferin has a background in law and has been president of the Slovenian FA since 2011.
England's Football Association last week declared its support for Van Praag, who - unlike Ceferin - is a member of Uefa's executive committee.
The Scottish Football Association said it would vote for the Slovenian.
"Aleksander and I have the same goal," said Van Praag.
"We want a different Uefa, we want a better Uefa, but he wanted to do it his way and I wanted to do it my way."