عبد المؤمن بن علي
Safi al-Din al-Urmawi al-Baghdadi () or Safi al-Din Abd al-Mu'min ibn Yusuf ibn al-Fakhir al-Urmawi al-Baghdadi (born c. 1216 AD in Urmia, died in 1294 AD in Baghdad) was a renowned musician and writer on the theory of music, possibly of Persian origin.