Saint-Eustache

Saint-Eustache may refer to:
 * Eustace of Luxeuil (c. 560 – c.  629), succeeded Saint Columbanus as the 2nd abbot of Luxeuil in Burgundy
 * Saint Eustace, a Christian martyr and soldier saint, who legend places in 2nd-century Italy, patron saint of hunters and firefighters
 * Saint-Eustache, Quebec, a city in western Quebec, Canada
 * Saint-Eustache, Haute-Savoie, a commune in France
 * Saint-Eustache, Paris, a church in Paris, France
 * Sint Eustatius, one of the islands of the Caribbean Netherlands