Yusuf Bey of Alaiye

Yusuf Bey was the founder of the Turkmen beylik of Alaiye, at modern Alanya on the southern Anatolian coast, and a prince of Karamanid descent. Alanya had been conquered from the Franks in 1293 by Bedreddin Mahmud Bey, under whom Yusuf governed the city.

When Ibn Battuta visited him, he ruled as an independent bey, his reign dated 1330–1337. He was the father of Alâeddin bin Yusuf, who held Alaiye from the 1350s until 1364.