Mubariz al-Din Mehmed Bey

Mubariz al-Din Gazi Mehmed Bey (died 1334) was the founder of the Aydınid principality in western Anatolia. A Turkish commander serving the Germiyan ruler Yakub Bey, he seized the Aydın lands for himself in 1308 and made Birgi his capital.

He took Ayasuluk and other towns, built a fleet there, and captured the harbour of Smyrna in 1328–1329. On his death in 1334 his son Umur succeeded him.