Vyborg (Russian: Выборг; Finnish: Viipuri; Swedish: Viborg; German: Wiborg) is a town in Leningrad Oblast, Russia. It is on the Karelian Isthmus and is about 130 km (81 mi) northwest of St. Petersburg, near the border with Finland. In 2021, 72,530 people lived there.
Vyborg Castle was founded during the Third Swedish Crusade in 1293 by Marshal Torkel Knutsson. The site was disputed between Russians and Swedes. In the Treaty of Nöteborg of 1323, it was finally recognized as part of Sweden.