Église Saint-Louis de Vichy, Catholic church in Vichy, France

Église Saint-Louis de Vichy is a church built in Romanesque Revival style with high rounded arches, thick stone walls, and sturdy pillars throughout its interior. The building features a broad central nave flanked by side aisles that lead to a cross-shaped floor plan.

Napoleon III decreed its construction on 27 July 1861, after the priest Louis Dupeyrat asked him at Saint-Blaise for "a temple worthy of God". The first stone was laid on 21 December 1862 by mayor Norbert Leroy and architect Jean Lefaure, and the church opened for worship on 2 July 1865, consecrated by Bishop de Dreux-Brézé of Moulins. It is dedicated to Saint Louis, the baptismal name of the emperor, his father and his son.

The dedication to Saint Louis refers to the baptismal name of Napoleon III, his father Louis Bonaparte and his son Louis-Napoléon; the nine choir windows by Antoine Lusson show Christ with eight saints of the imperial family, and the face of Saint Napoleon is that of Napoleon I. A plaque in the choir recalls Father Victor Dillard, a Jesuit deported to Dachau, and a 12-metre painted canvas of 1915 by Alphonse Osbert depicts the life of Saint Louis in 23 figures.

The church is located on rue Georges Clemenceau, near the thermal springs district of Vichy. Its main entrance is easily accessible on foot and the site sits in a central position within the city.

The Latin inscription on the lintel below the tympanum states that Napoleon III had the church built at his own expense for God and Saint Louis, dated 1864. The dedication honours the baptismal name shared by the emperor, his father Louis Bonaparte and his son, the prince imperial.