Ghiyath al-Din Muhammad I

Ghiyath al-Din Muhammad I was the second sultan of the Eretnids, ruling in Anatolia from his father Eretna's death in 1352 until his murder. Enthroned young at Kayseri, he was deposed by his emirs in 1354 in favor of his brother Jafar, but killed Jafar at the Battle of Yalnızgöz in April 1355 and restored his rule.

He lost Ankara to the Ottoman sultan Murad I in 1361. In October 1365, after suppressing a revolt by his vizier, he was murdered by his emirs at Kayseri, who placed his young son Ali on the throne.