English: The Rustamid dynasty (Arabic: الرستميون) (or Rustumids, Rostemids) was a ruling house of Ibāḍī imāms of Persian descent centered in Algeria, The dynasty governed as a Muslim theocracy for a century and a half from its capital Tiaret in Maghreb central (modern Algeria) until the Ismaili Fatimid Caliphate defeated it. Their realm extended over most of northern Algeria reaching far south to the border of Mali, it also extended to western Libya including all of Tripolitania and Zawila in the southeast, Tafilalt in Morocco and the principalities in the Rif were also owned by the Rustamids as well as part of Mauritania and southern, central and eastern Tunisia