Abū al-Qāsim Sīmjūr, ʿAlī b. Abī al-Ḥasan Muḥammad b. Ibrāhīm (d. after 395/1005), the last ruler of the Sīmjūrid family who governed Quhistān for a while on behalf of the Sāmānids. There is no information available about when he was born, his upbringing or when he was first appointed to government office, but before the death of his father, Abū al-Ḥasan Sīmjūr (q.v.) who was the Sāmānid commander-in-chief in Khurāsān, Abū al-Qāsim was the governor of Nīsābūr. Later, during the reign of his brother, Abū ʿAlī, he continued to hold the governorship of Nīsābūr.

After the death of Abū al-Ḥas…