Abū Jaʿfar Muslim ibn ʿUbayd Allāh al-Ḥusaynī (Arabic: أبو جعفر مسلم الحسيني) (died 976/7) was a Husaynid and the most prominent member of the ashraf families of Egypt during the late Ikhshidid dynasty and early Fatimid Caliphate. His son Tahir ibn Muslim established the .