The remains of the Projecteur d'Eix are part of the fortification ring around the city of Verdun in France. It was a position for searchlights, intended to prevent an enemy army from entering the fortification ring unseen at night. The Projecteur d'Eix was, together with similar positions at Vaux and Tavannes, constructed between 1903 and 1904. The three projecteurs provided space for a generator to drive electric lamps. The positions were later replaced by mobile searchlights.

The two concrete buildings of the Projecteur d'Eix are hidden in the woods west of the Ouvrage d'Eix. The location is not indicated on maps and is therefore not easy to find.