The Church of Saint Nicholas in Brno was a Romanesque structure located at Svobody Square. Despite its historical significance, it no longer stands today. Founded in the early 13th century by French-speaking Walloons who did not speak German or Czech, it served as a filial to the nearby Church of St. Jacob. Over time, the church underwent various transformations and played different roles within the community before being demolished between 1869-1870.

The origins of the Church of Saint Nicholas trace back to the early 13th century when French-speaking Walloons established it in Brno. These settlers needed a place of worship that catered specifically to their linguistic and cultural needs, as they did not speak German or Czech. Initially, the church served as a filial to the nearby Church of St. Jacob on Jakubské Square. Historical sources suggest that before its construction, the site may have been an ironworks area, possibly including a blacksmith's workshop.

Architecturally, the church was Romanesque with distinctive features such as elongated Gothic windows. In 1760, it underwent baroque modifications under František Antonín Grimm, altering its original style. The nave had a square plan, and the presbytery extended to form five sides of an octagon on the eastern side.

Throughout its history, the church experienced several ownerships and administrative changes. In 1231, King Václav I confirmed that it did not possess baptismal, burial, or parish rights. By 1425, Cardinal Jan XII. Železný reaffirmed its affiliation with St. Jacob's Church, designating it as a 'beneficium manuale,' meaning it was more closely tied to the nearby church than before. In 1645, during Swedish sieges, the church served temporarily as a hospice for Capuchin monks. Later, in 1760, František Antonín Grimm made baroque modifications to its structure.

The church's history is marked by several key events and curiosities. For instance, in 1353, Jan, then rector of the Church of Saint Nicholas, sold a house adjacent to the church due to disturbances caused by local lower nobility. The proceeds allowed him to acquire a larger property on Veselá Street. In the late 15th century, it received an annual income from Brno's citizens amounting to 15 hřiven and 22 Hungarian ducats.

Today, the Church of Saint Nicholas no longer exists as a physical structure; however, its footprint is preserved in the pavement of Svobody Square. This historical marker serves as a reminder of the church’s past presence and significance within Brno's urban landscape. The square itself has become a central area, surrounded by other historical buildings that contribute to its importance.

The Church of Saint Nicholas holds value not only for its architectural history but also for its role in the cultural and social fabric of medieval Brno. Visitors to Svobody Square can appreciate this monument’s legacy through its preserved footprint, offering insight into the city's rich past. This site invites exploration and reflection on the layers of history that have shaped Brno over the centuries.