The langues d'oïl are a dialect continuum that includes standard French and its closest autochthonous relatives historically spoken in the northern half of France, southern Belgium, and the Channel Islands. These belong to the larger category of Gallo-Romance languages.
These dialects can be divided into 5 dialect groups:
- Northern Norman (spoken north of the Joret line): including Anglo-Norman; Dgèrnésiais (spoken in Guernsey), Jèrriais (spoken in Jersey), Auregnais (spoken in Alderney), Sercquiais (spoken in Sark)
- Eastern Champenois
- Tourangeau, not to be confused with the French language in Touraine
- Western Champenois (or Eastern Francien)
- Eastern Armorican: Angevin; Mayennais; Manceau (Sarthois and Percheron); Southern Norman (spoken south of the Joret line)
- Western Armorican: Gallo