The Church of St. Eustache, Paris is a church in the 1st arrondissement of Paris. The present building was built between 1532 and 1632.
Situated near the site of Paris' medieval marketplace and rue Montorgueil, Saint-Eustache exemplifies a mixture of multiple architectural styles: its structure is Gothic while its interior decoration and other details are Renaissance and classical.
The 2019 Easter Mass at Notre-Dame cathedral in Paris was relocated to Saint-Eustache after the Notre-Dame de Paris fire.