Valday or Valdai may refer to one of the following:
- Valdai Hills, an upland region in Russia
- Valdai Discussion Club
- Valday (inhabited locality), name of several inhabited localities in Russia
- Lake Valdayskoye (or Lake Valdai), a lake in Novgorod Oblast, Russia
- Valday (ship), a class of Russian freight ships
|This disambiguation page lists articles associated with the title Valday.
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