Oum El Assel (Arabic: <big>أم العسل</big>, lit. mother of the honey) is a municipality in the district and province of Tindouf, Algeria. It has 1,794 inhabitants as of the 1998 census and is the least populated, largest, and least densely populated one of the two municipalities which form the province (the other one being Tindouf).
One of its villages, Hassi Mounir, is one of the country's projects to introduce solar energy in Algeria, and has 42 houses connected to solar energy. The natural ressources of the municipality (travertine, sand, and clay, among others) are still unexploited due to the existence of a large hamada (rock desert) in the region. There are projects for the creation of a glass factory, a freestone factory, and for a factory specialized in processing limestone products.