Demidovskaya () is a rural locality (a village) in Tarnogskoye Rural Settlement, Tarnogsky District, Vologda Oblast, Russia. The population was 53 as of 2002.
Demidovskaya is located 3 km northwest of Tarnogsky Gorodok (the district's administrative centre) by road. Tarnogsky Gorodok is the nearest rural locality.