Mahmūd ibn Muḥammad ibn Umar al-Jaghmini (Arabic: محمود بن محمد بن عمر الجغميني) or 'al-Chaghmīnī', or al-Jaghmini, was a 13th or 14th-century Arab[1][2] physician, astronomer and author of the Qanunshah (The Canon of Medicine) a short epitome of by Avicenna in Persian, and Mulakhkhas (Summary), a work on astronomy.
Little of him is known beyond what is indicated by his name, that he was a native of Jaghmin, a village in Khwarezm (Khiva), current day Uzbekistan. He is sometimes confused with another Jaghmini who lived until the mid-14th century, but multiple sources show he was alive in the early 13th.[3]