Roussillon (katalansk: Rosselló) er et av de historiske grevskapene i det tidligere.

Under den franske revolusjon ble provinsen Roussillon lagt ned og . Roussillon is one of the historical counties of the former Principality of Catalonia, corresponding roughly to the present-day southern French département of .

Roussillon is a commune in the Vaucluse department in the Provence-Alpes-Côte d’Azur region in southeastern France. Roussillon lies within the borders of the . Apt, in the Luberon, at the foot of the Monts de Vaucluse, the village of Roussillon is surrounded by beautiful countryside. The ocre-red village of Roussillon, one of the Plus Beaux Villages de France, is a tourist destination on the southern edge of the Plateau de Vaucluse. Ochre is a natural pigment that is in the sandy soil which makes up the cliffs around Roussillon.

Iron oxides colour the sands with shades ranging from yellow to . In Provence, set between the Luberon hills and the beautiful Monts de Vaucluse, lies the village of Roussillon, sparkling with ochre colour under the deep blue . Situated in the heart of the biggest ochre deposit in Europe, Roussillon blazons forth its difference through an astonishing palette of flaming colours. Visit Roussillon – travel guide, places to visit and Roussillon information and reviews.