Saints Cosmas and Damian church, Orthodox church in Korolyov, Russia.

The Saints Cosmas and Damian Church is a brick church built from 1786 under Prince Pyotr Odoevsky, with a bell tower showing features of Russian Baroque. A southern chapel of the Kazan Icon, designed by architect Boris Shnaubert, was added in 1898–1900. A small cemetery beside the church holds the graves of Prince P. I. Odoevsky and the Bolshov doctor M. M. Borisov.

The first record of a wooden Kosmodamian church on the Klyazma dates to 1585. In 1680 Prince Yuri Odoevsky had a new wooden church built about a quarter of a verst from the old cemetery. The surviving brick church was begun in 1786 under Prince Pyotr Odoevsky, and in 1800 he added a warm Church of the Transfiguration beside it.

The main altar is consecrated to the physician brothers Cosmas and Damian, venerated as unmercenary healers. A marble memorial plaque on the facade states that the church is now dedicated to the Roman martyrs of that name, though when the dedication changed from the Asian saints is unknown. The church keeps relics of the Roman saints and a revered icon of the Asian saints.

The church stands on the Klyazma riverbank in the Bolshevo area of Korolyov, not in the central district. A small cemetery beside it holds the graves of Prince P. I. Odoevsky, the Bolshevo doctor M. M. Borisov and the teacher L. I. Falyutinskaya; some graves have no inscriptions. It is an active parish, so modest dress is expected.

On the church's facade a marble memorial plaque states that the main altar is now dedicated to the Roman martyrs Cosmas and Damian, not the Asiatic saints of the same name; when and how the dedication changed is unknown. Inside are relics of the Roman saints and venerated icons of the Asiatic ones.