Abdillahi Deria was the fifth Grand Sultan of the Isaaq Sultanate and a notable Somali anti-colonial figure.

The Isaaq Sultanate was a Somali Arab kingdom that ruled parts of the Horn of Africa during the 18th and 19th centuries. It spanned the territories of the Isaaq clan in modern-day Somaliland The sultanate was governed by the Rer Guled branch of the Garhajis clan and is the pre-colonial predecessor to the modern Republic of Somaliland.