Drymocallis damghanensis Naderi & Faghir (Rosaceae) is described as a new species. The specimens were collected during a floristic study of an unexplored area on the rocky slopes of the Eastern Alborz Mountains (Damghan, Iran). Drymocallis damghanensis can be distinguished by its hairy carpels and rounded-obtuse teeth in leaflets. Here it is compared with the morphologically most closest taxa D. poteriifolia and D. schiraziana.