Qutb al-Din al-Shirazi (b. 1236 Kazerun – d. 1311 Tabriz) was a Persian polymath and philosopher who contributed to astronomy, mathematics, medicine, physics, music theory, philosophy and Sufism. He is noted for astronomical work improving on Ptolemy's planetary models and for his medical commentary on Avicenna's Canon. He died in Tabriz and was buried in the city's Charandab cemetery.