Ja'far ibn Aqil (, ') was the son of Aqil ibn Abi Talib, and his mother was Umm al-Thaghr bint Amir who was from Banu Kilab. Meanwhile, he was the son-in-law of Ali.
Ja'far is considered as one of Husayn's companions; he entered the battlefield after Abd Allah ibn Muslim, and he killed 2 (or 15) fighters of the army of Umar ibn Sa'd. He was killed by Bishr ibn Sawt al-Hamdani or Khalid ibn Asad al-Johani in (the battle of) Karbala on the day of Ashura when he was with Husayn ibn Ali.
Ja'far ibn Aqil was reciting the following epic verses in the battlefield:
Additionally, the name of Ja'far ibn Aqil ibn Abi Talib has been mentioned in Ziyarah al-Nahiya al-Muqaddasa and also Ziyarah al-Rajabiyyah.