Sharaf al-din Dawūd al-Qayṣarī (c.1260-c.1350) was a Mamluk-era Sufi scholar, philosopher and mystic. He was born in Kayseri, in central Anatolia and was the student of the Iranian scholar, Abd al-Razzaq Kashani (d. 1329).
He is known, or believed to be, the author of over a dozen philosophical texts; many of which are still important textbooks in Shi'ite religious schools. The most important of them are his extensive commentary on Ibn al-'Arabi's Fusus al-Hikam and his criticism of Ibn al-Farid's poetry. Sultan Orhan Gazi built a school for him in the town of İznik.