Based on the analysis of own and literature data 9 numerically insignificant species of reptiles were found at the territory of the autonomous republic. One of these species belongs to a group of turtles (Testudines), three of them belong to a group of lizards (Sauria) and five of them belong to a group snakes (Serpentes). Systematics, ecological and some biological peculiarities of species are reflected in the article. During the research previously registered Psammophis lineolatus has not been found and its existence at the territory of the Nakhichevan Autonomous Republic is under question.