Valdaysky (masculine), Valdayskaya (feminine), or Valdayskoye (neuter) may refer to:
Valdaysky District, a district of Novgorod Oblast, Russia Valdayskoye Urban Settlement, a municipal formation which the town of district significance of Valday in Valdaysky District of Novgorod Oblast, Russia is incorporated as Valdayskoye (rural locality), a rural locality (a settlement) in Kaliningrad Oblast, Russia
See also Valday (disambiguation)