aḥmad b. muḥammad b. ibrāhīm abu ’l-ʿabbās s̲h̲ams al-dīn al-barmakī al-irbilī al-s̲h̲āfiʿī, ibn khallikān () (1211 – 1282) was a 13th-century shafi'i islamic scholar who compiled the celebrated biographical encyclopedia of arab scholars, "wafayāt al-aʿyān wa-anbāʾ abnāʾ az-zamān" ('deaths of eminent men and history of the sons of the epoch').