St. Nicolai, Cultural heritage monument in Zeitz, Germany.

St. Nicolai in Zeitz is a ruined brick hall church built in 1891 to a design by Karl Memminger, with a three-conch choir and two- and three-light windows. Its roof ridge and cross-ribbed vault partly collapsed after a 1998 lightning strike; the tower still stands, and the former nave now serves as an event space and hostel church.

The predecessor church was demolished in 1823; the present building, designed by Karl Memminger, was consecrated in 1891 on Nikolaiplatz and first named Trinitatiskirche. Part of its bell set came from Zeitz Cathedral, including two 15th-century bells. Declared unsafe from the early 1970s, it was given up by the parish around 1980; a 1998 lightning strike set the tower roof alight, part of the ribbed vault collapsed and a bell fell into the nave.

The name changed from Trinitatiskirche to Nikolaikirche, and two of its bells came from Zeitz Cathedral, cast in the 15th century; the smallest of them disappeared in the first half of the 20th century. The two old bells were to be sold to the Laurentiuskirche in Halle, but donations paid for new bells there and the old ones returned to the cathedral's gatehouse. Since 2025 the building serves as an event space and Herbergskirche, with a beer garden beside it.

St. Nicolai stands on the Nikolaiplatz, and the surrounding churchyard covers 4,089 square metres. After the 2023 auction the new owner began securing the ruin so it could be reopened; the roof structure was repaired and the building stabilised by 2025. It now serves as an event space and hostel church, with a beer garden set up on the grounds.

Two of the bells came from Zeitz Cathedral and dated to the 15th century; they were moved here in 1891 with a third bell. After a lightning strike set the tower roof alight in 1998, part of the ribbed vault collapsed and a bell fell into the nave.