Burhan al-Din, or Burhan al-Islam al-Zarnuji (d. 602 AH/1223) was a Muslim scholar and the author of the celebrated pedagogical work, Ta'līm al-Muta'allim-Ṭarīq at-Ta'-allum (Instruction of the Student: The Method of Learning).

Al-Zarnuj was born and lived in Zarnuj, a well-known town beyond the river Oxus in the present Turkistan, Kazakhstan. Burhan al-Din (lit. proof of the Din) or Burhan al-Islam (lit. proof of Islam) al-Zarnuji were his agnomen, or moniker. He studied with many shaykhs including: Shaykh Burhān al-Dīn ‘Alī ibn Abī Bakr al-Marghīnānī (1152–1197), author of Al-Hidāyah; Shaykh Abu al-Muhamid Qawaduddin Hammad ibn Ibrahim al-Saffar; the great Shaykh Hasan ibn Mansur Qadiykhani; and others.

The exact date of his death is unknown, though it is speculated that he died in 602 AH/1223 or 640 AH/1242-1243 in Bukhara.

Al-Zarnuji's treatise, Ta'līm al-Muta'allim-Ṭarīq at-Ta'-allum, is a short introduction to the secrets of attaining knowledge. Acknowledged as a book in which even the most advanced and experienced teachers find advice they have yet to apply in their teaching, this book serves to create the proper framework for the Shari'ah program and its students and teachers alike.