Western Romance languages are one of the two subdivisions of a proposed subdivision of the Romance languages based on the La Spezia–Rimini Line. They include the Ibero-Romance and Gallo-Romance. Gallo-Italic may also be included. The subdivision is based mainly on the use of the "s" for pluralization, the weakening of some consonants and the pronunciation of "Soft C" as /t͡s/ (often later /s/) rather than /t͡ʃ/ as in Italian and Romanian.
Based on mutual intelligibility, Dalby counts thirteen languages: Portuguese, Spanish, Asturleonese, Aragonese, Catalan, Gascon, Provençal, Gallo-Wallon, French, Franco-Provençal, Romansh, Ladin and Friulian.