Yildirim defeated his rival Hulusi Belgu after winning 5,504 votes at the election, while Belgu received 1,144 votes.
Aziz Yildirim has been at the helm of Fenerbahce, one of the biggest sports clubs in Turkey, since 1998.
The Yellow Canaries’ chairman of 17 years, Yildirim had earlier said he would not stand, only to change tack after, he said, he saw a newspaper ad calling for his resignation.