Alaattin Baydar (1901 – 13 July 1990) was a Turkish footballer who played for Fenerbahçe.

[1][failed verification] Born in Istanbul, he played as a right winger and right forward and was known as Alâ.

[2] He was the younger brother of Nasuhi Baydar, who was a founding member of Fenerbahçe.

[6] He was a member of the first Turkey national football team that played against Romania on 26 October 1923.

This biographical article related to a Turkish association football defender is a stub.