Les Eclaireurs Lighthouse (the French name "Les Éclaireurs" means "the Scouts") is a slightly conically shaped lighthouse standing on the northeasternmost island of the five or more Les Eclaireurs islands, which it takes its name from, 5 nautical miles (9 km) east of Ushuaia in the Beagle Channel, Tierra del Fuego, southern Argentina.

[2] The brick-built tower is 11 metres (36 ft) high and 3 metres (10 ft) wide at the base, with its windowless wall painted red-white-red and topped by a black lantern housing and gallery.

The light is 22.5 metres (74 ft) above sea level emitting white flashes every ten seconds with a range of 7.5 nautical miles (13.9 km).

The lighthouse is still in operation, is remote-controlled, automated, uninhabited and is not open to the public, guarding the sea entrance to Ushuaia.

It is a popular tourist attraction, reached on short boat tours from Ushuaia.