Ahmad ibn Ibrahim al-Ghazi (c. 1507 – February 21, 1543 ("the Conqueror") is an Imam and General of Adal who invades Ethiopia and defeats several Ethiopian emperors, wreaking much damage on that kingdom.

With the help of an army mainly composed of Somalis, Imam Ahmad (nicknamed Gurey in Somali and Gragn in Amharic, both meaning "the left-handed"), embarks on a conquest which brings three-quarters of Ethiopia under the power of the Muslim Sultanate of Adal during the Ethiopian-Adal War from 1529-43.