Pyatnytska Church, Orthodox church in Chernihiv, Ukraine.

Pyatnytska Church stands in central Chernihiv on the site of the former market. It is a four-pillar, three-nave, three-apse church with a single dome, nearly square in plan. Its stepped centric composition, tall dome and stucco ornament reflect its 17th–18th-century Ukrainian Baroque rebuilding, while the core preserves Kievan Rus masonry from the late 12th to early 13th century.

Built at the turn of the 13th century on Chernihiv's market square, the church was funded either by Prince Ihor Sviatoslavych, hero of 'The Tale of Ihor's Campaign', or by wealthy merchants. Colonel Vasyl Dunin-Borkovsky financed a new roof in 1670 and full baroque rebuilding in 1676 and the 1690s, possibly under architect Ivan Zarudny. A 1750 fire damaged it; it was restored in 1755. In 1943 it collapsed after bombing, and Petro Baranovsky's team rebuilt it by 1962.

The dedication to Saint Paraskeva Pyatnytska, patroness of trade and merchants, reflects the church's origin at the market of Chernihiv's posad, built with merchants' money. In the 17th century it was the centre of the Pyatnytsky women's monastery, whose log cells stood by the town market behind a wooden wall. After the monastery was dissolved in 1786, shops and trading rows occupied its grounds from the 1820s.

The church is located at Hetmana Polubotka Street 3 in central Chernihiv, positioned directly behind the city theater. As an active place of worship, visitors should check opening times and dress respectfully when entering.

In autumn 1943 the city planned to demolish the ruins to clear space for a projected Victory Square, citing the building's "minor historical value". Research by Petro Baranovsky showed the church belonged to Kievan Rus architecture, not the 17th century, and it was restored between 1955 and 1962.