|Denomination||Russian Orthodox Church|
|Diocese||Diocese of Tula and Belevskoy|
|Abbot||Archpriest Victor Matveev|
The Nicholas-Zaretsky Church (Николо-Зарецкий храм) is a church in Tula in Russia. It contains the family vault of the Demidov family of industrialists. Its usual name is the Nicholas-Zaretsky Church, though it has held various others over time.
The church originated as two separate 17th century wooden churches on the site, replaced between 1730 and 1734 by a new double-nave church. The new church's founder is considered to be Akinfiy Demidov, son of Nikita Demidov. It has several side chapels, with paintings of the Nativity, St Nicholas, St Andrew and Tikhon of Kaluga. In 1734 a new crypt chapel was built for burials of the Demidov family. A bell tower in the Yaroslava-Suzdal style was built near the church. In Soviet times the church was closed and used as a warehouse, though it is now back in use as a church.