Roussillon is a commune in the Vaucluse department of the Provence-Alpes-Côte d'Azur region in Southeastern France. In 2016, it had a population of 1,317. Roussillon lies within the borders of the Natural Regional Park of Luberon. In the French natural regional parks system, new economic activities may be developed only if they are sustainable.
It is noted for its large ochre deposits found in the clay surrounding the village. Ochres are pigments ranging from yellow and orange to red. One of the former ochre quarries can be visited via the "Sentier des Ocres" (Ochre Path), a walk of either 30 or 60 minutes through the old workings.