Mentonasc (Occitan pronunciation: [me(n)tuˈnaʃk]; Mentonasco in Italian, Mentonnais [mɑ̃tɔnɛ] or Mentonasque [mɑ̃tɔnask] in French) is a Romance dialect historically spoken in and around Menton, France.

However, it is traditionally assigned to the Occitan language but Italian nationalists consider it part of the Ligurian dialects.

In the 19th century Mentonasc was used in the territories of the Free Cities of Menton and Roquebrune[citation needed], an independent statelet created in connection with the Italian Risorgimento.

When France annexed the Free Cities in 1861, Mentonasc began its decline, substituted by the French language.

[3] Now the language is being taught within the French educational system, as a variety of Niçard (i.e. Provençal and Occitan), so this may change.