Sveti Nikolay church, Orthodox church in Pleven, Bulgaria.

Sveti Nikolay church is a three-nave basilica of the Bulgarian Revival, sunk about 2 m into the ground, with its bell tower in a separate building added in 1883. Its exterior icons sit above the west entrance and beside the dome of the central nave; 462 clay pots are built into the walls, vaults and arches for acoustics. The walnut iconostasis, finished in 1845, holds 68 icons by Dimitar Hristov Zograf.

The church was established in 1834 as Pleven was developing into a larger settlement. Its construction represented an important step in establishing Orthodox religious institutions in the region during the 1800s.

The walls carry no frescoes; instead the church holds 68 icons by Dimitar Hristov Zograf, brother of Zahari Zograf, plus icons from the Samokov school. The walnut iconostasis, with its bishop's throne and pulpit, was carved in 1843–1845 by master Petar and two apprentices of the Tryavna woodcarving school.

The church is centrally located in the city and easily accessible by foot or local transport from most areas of Pleven. Visitors should note that service times are the busiest periods, so arrival outside these hours offers a quieter experience.

The bell in the separate 1883 bell tower was donated by a Finnish merchant. The church itself is sunk about 2 m into the ground, and 462 clay pots given by a Pleven potter are built into its walls, vaults and arches to improve acoustics.