Abu al-Hasan Ali ibn Yaqteen ibn Musa al-Baghdadi (742–798) (Persian:ابوالحسن علی بن یقطین بن موسی البغدادی) was a close companion of Imam Musa al-Kadhim, a Shia narrator, jurist, and mutakallim.
Since his father, , was one of the supporters of Imam Ja'far al-Sadiq, he was placed under an arrest warrant by Marwan I.
Therefore, he was forced to escape and hide, and Ali ibn Yaqteen's mother took him and his brother, Ubayd, to Medina.
[3] Undoubtedly he was a Shia; but he hid his belief from Abbasid Caliphs all the time as his father did.
[4][5] In biographical evaluation sources, three books have been mentioned for him: In 798 Ali ibn Yaqteen died in Baghdad while Musa al-Kadhim was imprisoned by Harun al-Rashid.