Morcenx is a commune in the Landes department in Aquitaine in south-western France.
Commune situated in the Grande Lande in the Landes forest (forêt des Landes) on the Bez.
Access by the A63 freeway, exit 14 Onesse-et-Laharie.
The Morcenx area, bordered by the Bez and its tributaries, seems to have been occupied since prehistoric times. Flint tools, domestic furniture, and a cinerary (cremation ashes) box from the 1st Iron Age have been found there.
The church « sanctus Petrus de Morcencz » was mentioned in the Liber rubeus during the 12th century.