The Saif ed-Din Bokharzi & Bayan-Quli Khan Mausoleums are two mausoleums in Uzbekistan dedicated to Saif ed-Din Bokharzi, a Khorasani sheikh, and Bayan-Quli Khan, the Chagatay ruler. They are located in Fathabad, to the east of medieval Bukhara, the former location of a vast religious complex. The initial core of the complex was the grave of Saif ed-Din al-Boharsi, who died in 1261 (or possibly 1262). His followers built several dormitories (khanakas) for dervishes, who lived there on donations of the KubrawiyaSufi order members. The mausoleum of Saif ed-Din Boharsi dates from the end of the 14th century. The Chagatay ruler Bayan-Quli Khan was interred near the burial place of al-Boharsi according to his wishes, and the Mausoleum of Bayan-Quli Khan appeared there in 1358.