Abdullah Ali al-Asghar ibn Al-Husayn (09 Rajab 60 AH – 10 Muharram 61 AH (10 October 680 CE)), or simply Ali Asghar ("Younger Ali"), was the youngest child of Al-Husayn (son of ‘Ali, grandson of the Islamic Prophet Muhammad and the third Imam) and Rubab bint Imra’ al-Qays.
He was martyred during the Battle of Karbala, and is commemorated in shia as the "personified quintessence of the innocent victim."