Abdullah al-Aftah ibn Ja'far al-Sadiq (d.766 CE / 149 A.H.) was the eldest surviving son of
Ja'far al-Sadiq (after al-Sadiq’s death) and the full-brother of
Isma'il ibn Jafar. Abdullah’s title "
al-Aftah" derives from the Arabic words "
aftah al-ra’s" (broad-headed) or "
aftah al-rijlayn" (broad-footed) used to describe his appearance.