Saint-Fiacre (French pronunciation: [sɛ̃ fjakʁ] ) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.

It is named after Saint Fiacre who built a hospice for travelers at the end of the 6th century in what is now Saint-Fiacre, Seine-et-Marne. He is still revered as the patron saint of Saint-Fiacre.

In the late medieval song Le Roy Engloys, Saint-Fiacre en Brie, Brie being the region the town is located in, is mentioned as the place where the English king Henry V died. This is incorrect, however, as the king died at Vincennes. The error can be explained by the fact that the song has been written a century later.

• Communes of the Seine-et-Marne department

• 1999 Land Use, from IAURIF (Institute for Urban Planning and Development of the Paris-Île-de-France région) (in English)
• Base Mérimée: Search for heritage in the commune, Ministère français de la Culture. (in French)