Kościół św. Mikołaja w Wiślicy, Medieval church ruins in Wiślica, Poland.

The St. Nicholas Church in Wiślica is a small rectangular building closed by an apse, erected in opus spicatum, a herringbone brick-and-stone technique. Only its foundations survive, displayed in a small pavilion. A burial chapel built in opus emplectum was attached to the church.

The church was long dated to the 10th century, when a round basin found beside it was linked to the missions of Saints Cyril and Methodius. Ceramic studies later placed its construction no earlier than the late 11th or early 12th century. It was demolished in the 12th century to make way for the town's fortifications.

The church served as a burial ground with an unusual southern chapel reserved specifically for female graves during medieval times. This space shows how religious sites reflected the social structures of medieval communities.

The excavated foundations lie under a small pavilion in Wiślica, in the Świętokrzyskie Voivodeship. The remains are at ground level, so they can be viewed and photographed from the pavilion without climbing. The site is part of the 2018 Monuments of History entry that also covers the collegiate basilica and the hillfort, so it is visited together with them.

The church was demolished in the 12th century to make way for the town's fortifications, so only its foundations survive. They are kept in a small pavilion. In 2018 the site was listed as a monument of history together with the collegiate basilica and the hillfort.