Ahmad ibn Sulayman al-Muqtadir (or just Moctadir; , Abu Ja'far Ahmad al-Muqtadir bi-Llah ibn Sulayman) was a member of the Banu Hud family who ruled the Islamic taifa of Zaragoza, in what is now Spain, from 1049 to 1082. He was the son of the previous ruler, Al-Mustain I, Sulayman ibn Hud al-Judhami.