| name | Ethnologue status | language family | office | IETF | alphabet | ISO 6391 | ISO 6392 | ISO 6393 | speakers (people) | Manuscript | micronation | publisher | former country | is a dialect |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trégorrois Breton dialect | Breton language | Yes | ||||||||||||
| Breton cornouaillais | Breton language | Yes | ||||||||||||
| Breton léonard | Breton language | Yes | ||||||||||||
| Breton vannetais | Breton language | Yes | ||||||||||||
| Chon | Breton language | Yes |