Ala al-Din bin Yusuf

Ala al-Din bin Yusuf was the second bey of the Alaiye beylik, succeeding his father Yusuf, its founder, around the 1350s. His reign was dominated by the coastal campaigns of Peter I of Cyprus, who seized Korikos in 1360 and Antalya in 1361.

Ala al-Din joined the Teke bey Mehmet and other rulers against the Cypriots, at one point acknowledging Peter's overlordship. He died in 1364 and was entombed in Alanya's Gülevşen Mosque; his son Mahmud succeeded him.