Catholic Church of St. Clement in Sevastopol, Gothic Revival Catholic church in Sevastopol, Russia.

The Catholic Church of St. Clement is a Gothic Revival church built in 1905–1911 to a design by military engineer Nikolai Trettessky, using motifs of late English Gothic. It is a three-nave building with a basement, 17 m high and about 500 m² in area, with a wooden bell tower and one bell in the courtyard. The tower and upper part planned in the project were never completed.

A Catholic chapel existed in Sevastopol from 1871, and in 1898 the community petitioned Nicholas II for a church dedicated to St. Clement. The military engineer Nikolai Trettessky designed it, construction began in May 1905 and was completed in 1911. Soviet authorities closed the church in 1936 and the building became Cinema Druzhba; it was returned to the Catholic community in 2018.

The church is named after Saint Clement of Rome, to whom the community's 1898 petition to Nicholas II was addressed. Services resumed only briefly in November 2008, after a single liturgy and a decade-long pause. Since 2018 the parish plans exhibitions and classical music concerts alongside worship.

The church stands at the corner of Novosilskaya Square and Teatralnaya Street, not on the waterfront. Since 2010 the former cinema has been closed and the building is undergoing restoration agreed until 2024, so visits depend on works; liturgies, exhibitions and classical concerts are planned inside.

The cinema conversion added a two-storey concrete-and-glass box in front of the main entrance, lowered the ceiling of the central nave and turned the choir loft into the projection room. The floor was rebuilt as a raised amphitheatre. The building was returned to the Catholic community in May 2018, with reconstruction planned by 2024.