Demidovsky

Demidovsky (masculine), Demidovskaya (feminine), or Demidovskoye (neuter) may refer to:
 * Demidovsky District, a district of Smolensk Oblast, Russia
 * Demydivka Raion (Demidovsky District), a district of Rivne Oblast, Ukraine
 * Demidovskoye Urban Settlement, an administrative division and a municipal formation which the town of Demidov and four rural localities in Demidovsky District of Smolensk Oblast, Russia are incorporated as
 * Demidovsky (rural locality) (Demidovskaya, Demidovskoye), several rural localities in Russia