Abu 'Ubayd al-Juzjani

{{Short description|Persian physician and chronicler from Guzgan}}

Abū 'Ubayd al-Jūzjānī, (d.1070),Science, Medicine and Technology, Ahmad Dallal, The Oxford History of Islam, ed. John L. Esposito, (Oxford University Press, 1999), 171. ({{lang|fa|ابو عبيد جوزجانی}}) was a Muslim physician and chronicler from Guzgan (modern day Uzbekistan).

He was the famous pupil of Avicenna, whom he first met in Gorgan.{{cite book |title=The Life of Ibn Sina |last=Ibn Sina |author-link=Avicenna |year=1974 |publisher=SUNY Press |isbn=0-87395-226-X |pages=43 |url=https://books.google.com/books?id=01J8-oh4COgC }}

He spent many years with his master in Isfahan, becoming his lifetime companion. After Avicenna's death, he completed Avicenna's Autobiography with a concluding section.{{cite book|last=Adamson|first=Peter|title=Philosophy in the Islamic World: A History of Philosophy Without Any Gaps|url=https://books.google.com/books?id=KEpRDAAAQBAJ|date=7 July 2016|publisher=Oxford University Press|isbn=978-0-19-957749-1|page=115}}

The historian Ibn Abi Usaibia refers Avicenna and his close companion Abu Ubayd lived together the residence of Sheikh al-Raiss (which is the title given to Avicenna) and were used to pass each night on studying one by one the Canon and Shifā's instructions.Ibn Abi Usaibaa. 4th ed. Vol. 3. Beirut: House of Culture Press; 1987. Uyun al-Anba fi Tabaqat al Atibba, Dar al-Thiqafa, cited by {{cite journal|first=Jamal |last=Moosavi | title=The Place of Avicenna in the History of Medicine|journal=Avicenna J Med Biotechnol|date= April–June 2009 | volume=1 | issue=1 |pages=3–8|pmid=23407771 |pmc=3558117|issn=2008-4625|oclc=8145692545}}