Jābir ibn Yazīd al-Juʿfī, died c. 745–750, was a Kufan transmitter of hadith and a companion of the Shi'a Imams Muhammad al-Baqir (677–732) and Ja'far al-Sadiq. His reputation among later Muslims was uneven: while some Sunni and Shia scholars considered him a reliable authority, others rejected him for his alleged 'extremist' or 'exaggerated' ideas. In some sources he is said to have followed the ideas of the 'exaggerator' al-Mughira ibn Sa'id, while other sources deny this.