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