Lanarce is a commune in the Ardèche department in southern France.

The village of Lanarce, situated along a busy road between Montélimar to Le Puy-en-Velay demonstrates the difficulty of Ardeche mountain life. Built more than 1000m above sea level, it is covered in snowdrifts and swamps, depending on the season. Lanarce has interesting volcanic geography, with bog-filled maars—low volcanic craters.