Ahmad Harb 'Arad (Arabic: أحمد بن علي) (flourished mid-14th century) was the son of Jamal ad-Din I.
The Emperor of Ethiopia Newaya Krestos made him Governor of Ifat after his father Ali ibn Sabr ad-Din unsuccessfully revolted against the Emperor and was put into prison.
Ahmad accepted his role as a vassal to Emperor Newaya Krestos and hence regarded very poorly by the Walashma family.
released from imprisonment after eight years and restored to the governorship, whereupon he treated Ahmad as a traitor, excluding him from all positions of authority.
Ahmad called on the intervention of Emperor Newaya Krestos to gain a position over a single district; and his sons were considered outcasts by the rest of the Walashma family.