Valday

Valday or Valdai may refer to:

• Valdai Hills, an upland region in Russia
• Valdai Discussion Club
• Valday (inhabited locality), several inhabited localities in Russia
• Lake Valdayskoye (or Lake Valdai), a lake in Novgorod Oblast, Russia
• Valday (ship), a class of Russian freight ships
• Dolgiye Borody (residence), a home of the president of Russia, also commonly known as "Valdai"