Septfontaines is a small town in western Luxembourg. It is part of the commune of Habscht, in the canton of Capellen, which is part of the district of Luxembourg.
Septfontaines Castle is one of the castles belonging to the Valley of the Seven Castles. Located high above the town of Septfontaines, the medieval castle is now privately owned.
Septfontaines was the administrative centre of a commune by the same name until 2018, when it was merged with the commune of Hobscheid to form the commune of Habscht.