Muhammad bin Musafir (died before 953) was the Sallarid ruler of Tarum in modern northwest Iran (before 916–941) and Iranian Azerbaijan (949). He was the son of Musafir, whose name appears to have been an Arabicized form of his Persian name Asfar/Asvar. Muhammad's original name seems to have been Sallar or Salar (Persian for 'commander'); 'Sallar' would later become a title used by his successors.