- Language: Asturian
- Alternate names: Asturiano, Leonese, Leonés, Astur-Leonese, Asturian-Leonese, Asturianu
- Language code: ast
- Language family: Indo-European, Classical Indo-European, Italic, Latino-Faliscan, Latinic, Imperial Latin, Romance, Italo-Western Romance, Western Romance, Shifted Western Romance, Southwestern Shifted Romance, West Ibero-Romance, Asturo-Leonese
- Dialects: Leonese.
- Number of speakers: 110,000
- Vulnerability: risk
- Script: Latin script.
About 43% immigrated into the region from the south since the 1950s, and have not absorbed Asturian culture or language. There is literature, both popular and literary, since the 17th century; poetry, traditional ballads, and chivalric novels of oral tradition. The Academy of the Asturian Language formed in 1981 to revive the academy of the 18th century. Western Asturian may need orthography adaptation. Montañes is a Spanish dialect with Asturian influence.
Some people wish to consider the differences between Asturian and the varieties spoken in Cantabria, Spain as distinct enough to merit special consideration.