Bishr ibn al-Ḥasan (Arabic: بشر بن الحسن) was a great-grandson of the Islamic prophet Muhammad. He was the son of second Shia Imam Hasan ibn Ali.^[1][2] He is considered to be one of the martyrs of the Battle of Karbala,^[3][4][5] although no record describes the circumstances surrounding his death by enemy forces.^[6][7]

The first mention of Bishr ibn al-Hasan being killed at Karbala was by Shia scholar Ibn Shahrashub. Of Hasan ibn Ali's twenty sons, seven participated in the battle, among them Bishr ibn al-Hasan.^[8] All but one brother was killed during the battle. In his account of their deaths, Shahrashub writes on Bishr: "... and it has been said that Bishr has been martyred, too."^[9]

Among Bishr ibn al-Hasan's brothers who were present at the event of Ashura were Amr (who was killed in the event at Karbala when he was a child),^[10] Hasan (better known as 'Hasan al-Muthanna'), Qasim (who was also considered to be killed at Karbala), Abd Allah (Abd Allah al-Asghar).^[11][12]