St. Nicholas Cathedral (Finnish: Pyhän Nikolaoksen katedraali; Swedish: Helige Nikolaus katedral; Russian: Никольский собор) is the main church of the Kuopio Orthodox Parish in Väinölänniemi, Kuopio, Finland, and also the seat of the Orthodox Diocese of Karelia.

[1] The church, built between 1902 and 1903, was designed by the master builder Aleksander Isakson from Vyborg.

In appearance, it resembles red-brick simultaneous garrison churches.

[3] The iconostasis was made at the Alexander Nevsky Lavra in Saint Petersburg and was donated by Nikolay Bobrikov, the Governor-General of Finland.

[2] The church was renovated in 2003-2004 and reopened by Archbishop Leo Makkonen in 2004.