The Cathedral of Saint Nicolas

The Orthodox Cathedral of St. Nicholas in Białystok is an historic Orthodox cathedral in Bialystok, Poland

St. Nicholas is the cathedral of the Bialystok-Gdańsk diocese of the Polish Autocephalous Orthodox Church and the seat of the Bialystok parish of St. Mikołaj. It is the largest Orthodox cathedral in the city.

The current St. Nicholas building was erected between 1843 and 1846 on the site of an Uniate church from the early 18th century. St. Nicholas was consecrated as a church by the Vilnius and Lithuanian metropolitan Józef. During the interwar period, St Nicholas was one of two Orthodox churches in Bialystok.