Barbus magniatlantis is a doubtfully distinct ray-finned fish species in the family Cyprinidae. It is found only in Morocco. Its natural habitat is freshwater springs. It is not considered a threatened species by the IUCN. The taxonomy and systematics of the Maghreb barbs are subject to considerable dispute. Some authors consider B. magniatlantis a distinct species, while others include it in B. nasus.