Coordinates: 55°45′26″N 37°37′22″E / 55.757261°N 37.622683°E
Nikolskaya Street (Russian: Никольская улица) is a pedestrian street in the Kitay-Gorod of Moscow. It connects Red Square and Lubyanka Square. It was known as the Street of the 25th of October between 1935 and 1990.
The north side of the street is lined with historic buildings, such as the Kazan Cathedral, the Old Mint, Monastery of the Holy Saviour, Greek Monastery of St. Nicholas (from which this street takes its name), and the former Holy Synod Printing Offices, Russia's first publishing house. The south side contains the GUM and the , an example of the Naryshkin Baroque underwritten by the Saltykov boyar family in 1691.
Before Stalin's reconstruction of downtown Moscow, the street led to the of the Kitay-Gorod wall (1534-38) which used to dominate the Lubyanka Square. , dating from 1694, adjoined the gate, as did the more recent with a large cupola. All these buildings were razed in 1934.