The Church of St Louis (French: Église Saint-Louis de Rouen), often referred as the Chapel of the Lycée Corneille (French: Chapelle du Lycée Corneille), was a Roman Catholic church in Rouen, Normandy, France.

In 1799 it served as a depository for Rouen's paintings, making it the first location of the city's Museum of Fine Arts.

After the building had become unsound, Rouen's city council envisaged its demolition in 1895 to free up space for an extension of the Lycée Corneille.

From 1959 onwards, successive restoration campaigns took place to bring it back to its original state and allow for its doors to be reopened to the public.

Statues depicting Saint Louis, Charlemagne, Ignatius of Loyola and Francis of Assisi are placed on top of the cornices.

The chapel to the south possesses a retable akin to the one in the church of St. Ouen, representing the statue of Notre-Dame de Liesse.

The chapel west of the choir was in great part influenced by Robert de Cote's 1704 plan.

The upper part of the doors surrounding the chapel's retable features the life of Ignatius of Loyola.