Sharaf ad-Din Ali Yazdi or Sharif al-Din Ali’ Yazdi (Persian: شرف الدین علی یزدی; died 1454, Yazd), also known by his pen name Sharaf, was a 15th-century Persian[1] scholar who authored several works in the arts and sciences, including mathematics, astronomy, enigma, literature such as poetry, and history.

He devoted much of his life to scholarship, furthering his education in Syria and Egypt until Timur's death in 1405.

[3] As a young man, he was a teacher in his native city of Yazd and a close companion of the Timurid ruler Shahrukh (1405–47) and his son Ibrahim Sultan.

In 1442/43 he became the close advisor of the governor of Iraq, Mirza Sultan Muhammad, who lived in the city of Qom.

Timur's grandson Sultan Abu al-Fath Ibrahim Mirza was Sharif al-Din's patron during the completion of his grandfather's biography.