The Dama Mhorr Gazelle (Nanger dama mhorr) is a mammal in the Bovidae family of bovines, including gazelles and antelopes. It is also known as the Mhorr Gazelle, the Mohor Gazelle, and the Addra Gazelle. It is a sub-species of the Dama Gazelle (Nanger dama). It is extinct in the wild and was last seen in the wild in 1968, therefore it is a critically endangered species. It exists in breeding programs in zoos and reserves.  

The Dama Mhorr Gazelle is white below with a reddish-brown head and neck. It has a small head with a narrow muzzle (nose). It has large eyes. The male and the female have medium-length curved horns in the shape of an S. It has longer legs and a longer neck than other gazelles. It is an artiodactyl because it has cloven (split) hooves.