St. Nicholas' Church, Medieval church in Bernburg, Germany.

St. Nikolai in Bernburg is a Gothic church of rough light brown and grey masonry, with a long nave under a steep red tiled roof and a square tower on the left. The nave's buttressed side wall holds four tall pointed arched windows and a pointed arched doorway; the tower carries a blue clock face with gold Roman numerals. Inside, a high hall with white plaster walls and a curved wooden plank ceiling opens through pointed stone arches, with dark wooden benches facing a cross at the far end.

Founded as the parish church of Bernburg's Neustadt, the choir dates from 1240 and the nave was built up to about 1300. An unfinished early 15th-century remodelling into a hall church left the high south windows but no vaults. Protestant from the Reformation in Anhalt in 1526, it was leased to the Catholic parish of St. Bonifatius for 99 years in 1965 and has been Catholic since.

The church is named after Saint Nicholas of Myra. Since 1965 it has been leased for 99 years to the Catholic parish of St. Bonifatius, and the Catholic community founded in 1947 as Bernburg-Talstadt took the patronage of John the Baptist, after the nearby Hospital S. Joannes Baptista that grew out of the Servite monastery dissolved in 1526. The late Gothic octagonal font with its shaft ring survives inside.

Visitors can explore the interior during regular opening hours, though access may vary depending on religious services and special events. It is best to check ahead for current visiting conditions since worship activities take priority.

The north tower was never completed as planned: it was capped with a simple saddle roof, while only the south tower received a spire and was restored after a fire in 1832. The choir, the oldest part dating from 1240, was walled off from the nave in 1965 and converted into a parish hall.