Languedoc-Roussillon (Occitan: Lengadòc-Rosselhon; Catalan: Llenguadoc-Rosselló) is one of the 26 régions of France.

The région is made up of the following historical provinces:

-68.7% of Languedoc-Roussillon is the province of Languedoc: départements of Hérault, Gard, Aude, extreme south and extreme east of Lozère, and extreme north of Pyrénées-Orientales. The former province of Languedoc also extends over the Midi-Pyrénées région, including the old capital of Languedoc Toulouse.

-17.9% of Languedoc-Roussillon is the province of Gévaudan: Lozère département. A small part of Gévaudan is also inside the Auvergne région. Gévaudan is often considered to be a sub-province inside the province of Languedoc, in which case Languedoc accounts for 86.6% of Languedoc-Roussillon.

-13.4% of Languedoc-Roussillon is a collection of culturally Catalan pays (i.e. "countries"): Roussillon, Vallespir, Conflent, Capcir, and Cerdagne, all of which located from east to west inside the Pyrénées-Orientales département.

All of these pays (in Catalonia, on the other side of the border, a pays is known as a comarca) were part of the Ancient Regime province of Roussillon, owning its name to the largest and most populous of the five pays, Roussillon. "Province of Roussillon and adjacent lands of Cerdagne" was indeed the name that was officially used after the area became French in 1659, based on the historical division of the five pays between the county of Roussillon (Roussillon and Vallespir) and the county of Cerdagne (Cerdagne, Capcir, and Conflent).

Catalan nationalists prefer to use the name "Northern Catalonia" (Catalan: Catalunya Nord), but this name has no official recognition, and it is quite controversial.

Finally, it should be noted that Roussillon, Vallespir, Conflent, and Capcir lie entirely inside the Languedoc-Roussillon région, but that only the northern half of Cerdagne is inside the région. The southern half of Cerdagne is on Spanish territory, since the Treaty of the Pyrenees of 1659 divided Cerdanya between France and Spain. People in Catalonia refer to the French part of Cerdagne as "High Cerdanya" (Alta Cerdanya), but this name has no recognition in France.

At the regional elections in March 2004, the fiery and domineering socialist mayor of Montpellier Georges Frêche, a maverick in French politics, conquered the région, defeating its center-right president. Since then, Georges Frêche has embarked on a complete overhaul of the région and its institutions.

In the current debate over the reform of French political divisions, which focuses on the fact that there exist too many small régions in France, there are those who would like to merge the Languedoc-Roussillon and Midi-Pyrénées régions, thus reunifying the old province of Languedoc, and creating a large région able to compete at the European level. It seems probable that Georges Frêche, with his idea of a "Septimanie" région, does not support such plans, although political leaders in Béziers, Narbonne, and especially Nîmes, would probably support such a merger, hostile as they are to Montpellier, which was chosen as the capital of Languedoc-Roussillon instead of their own city, and which they accuse of hegemony.