The Bavand dynasty (also spelled Bavend), or simply the Bavandids, was an Iranian dynasty that started in 665, as an independent group of rulers, most of their time reigning over Mazandaran in what is now northern Iran. The dynasty ended in 1349. After the Mongol conquest, the Bavandis continued to rule as local strongmen of Tabaristan and sometimes Dailam. Their power was finally brought down around 1350 when Afrasiab of the Jalaviyeh dynasty, themselves an off-shoot of the Bavandis, managed to kill Fakhroldoleh Hasan, the last of the mainline Bavandi kings.