Church of Saint Procopius in Křtěnov, Roman Catholic church in Křtěnov, Czech Republic.

The Church of Saint Procopius is a single-nave church with a polygonal presbytery, standing beside a bell tower, cemetery, rectory and former school. The presbytery holds 14th-century Gothic frescoes and a carved stone Gothic tabernacle; a 1700 tombstone with a coat of arms lies under the choir loft. The organ dates from 1852 and was built by Franz Jüstl.

The church dates from the 14th century; a pleban named Mathias is documented here in 1261, and Aleš of Březí, later bishop of Litomyšl, served as parish priest. The village of Křtěnov was demolished for the construction of the Temelín Nuclear Power Station, and the church was originally slated for demolition too but was saved. Its foundations were reinforced with a reinforced-concrete ring in the late 1980s, and frescoes from the mid-14th century were found in the presbytery during the 1994–1995 reconstruction. The municipality of Temelín became owner in 2025.

The church preserves Gothic frescoes from the mid-14th century, found in the presbytery during the 1994–1995 reconstruction. A decorated stone Gothic tabernacle stands in the same space, and a tombstone with a coat of arms from 1700 lies under the choir loft. The organ dates from 1852 and was built by Franz Jüstl.

The church stands beside the Temelín Nuclear Power Plant and Vysoký Hrádek chateau, in the area of the vanished village of Křtěnov. It is a former parish church without its original furnishings; the original altarpiece is now in the church at Purkarec. The building belongs to the municipality of Temelín since 2025.

The church was meant to be demolished with the village of Křtěnov, cleared for the Temelín Nuclear Power Station. It was saved, and in the late 1980s its foundations were reinforced with a reinforced-concrete ring. Since 2025 the building has belonged to the municipality of Temelín.