Trinitarian Church of Bratislava, Baroque church in Old Town, Slovakia

The Trinitarian Church of Bratislava, dedicated to Saint John of Matha and Saint Felix of Valois, stands on Župné námestie with a concave, strictly symmetrical facade, the first of its kind in Slovakia. Two three-storey towers flank a central section topped by a volute-framed gable and a triangular tympanum bearing a monstrance. The oval interior has three chapels on each side, a longitudinal presbytery and an entrance hall with angled towers.

The church was built in 1717 on the site of the older Saint Michael's Church, which had been torn down in 1529 to strengthen the city's defenses against Ottoman forces. The Trinitarian Order chose this spot to establish their presence in Bratislava.

The main altarpiece depicts Saint John of Matha and Saint Felix of Valois ransoming prisoners from Turkish captivity; the statues of Saint Agnes and Saint Catherine at the rear of the altar are attributed to Bavarian sculptor Johann Baptist Straub. The rear altar of the Virgin Mary was commissioned in 1736 by Count Zichy and holds a copy of the Regensburg Madonna painting.

The church sits in the heart of the Old Town and is easy to reach on foot from the main streets and squares nearby. As it is still used for worship, visitors are expected to behave quietly and dress modestly.

Between 2003 and 2009, the building served as the cathedral of the Military Ordinariate of Slovakia, giving it a formal role in the country's military chaplaincy. This temporary function set it apart from most parish churches in the city.