The Church of St Eustace, Paris (French: L’église Saint-Eustache) is a church in the 1st arrondissement of Paris. The present building was built between 1532 and 1632.
Situated at the entrance to Paris’s ancient markets (Les Halles) and the beginning of rue Montorgueil, St Eustace’s is considered a masterpiece of late Gothic architecture. The church’s reputation was strong enough of the time for it to be chosen as the location for a young Louis XIV to receive communion. Mozart also chose the sanctuary as the location for his mother’s funeral. Among those baptised here as children were Richelieu, Jeanne-Antoinette Poisson, future Madame de Pompadour and Molière, who was also married here in the 17th century.