Abū al-Maʿālī Sayf al-Dīn Saʿīd b. al-Muṭahhar b. Saʿīd Bākharzī (al-Bākharzī, Persian: باخرزی shortened as Sayf al-Dīn Bākharzī, was a poet, sheikh, and theologian who lived in the 13th century. As suggested by his nisba, he was born and raised in Bakharz, a district of the province of Quhistan in Khorasan, and he got religious education in Herat and Nishapur cities. When he achieved unusual successes in mystical teaching, he moved to Khorezm. There he became one of nearest followers of very popular sheikh – Nadjm ed-Din Kubra. Afterwards, according to the prominent poet Abdurahman Djami Boharsi, Sheikh Saif ed-Din went to Bukhara as a tutor. In Bukhara he was honored with the title of "Sheikh al-Alam".
