- Language: Asturian
- Alternate names: Astur-Leonese, Asturian-Leonese, Asturianu
- Language code: ast
- Language family: Indo-European, Italic, Romance, Italo-Western, Western, Gallo-Iberian, Ibero-Romance, West Iberian, Asturo-Leonese
- Number of speakers: 125039
- Script: Latin script
Asturian belongs to a wider linguistic group called Asturian-Leones, which was the language of the ancient kingdom of León. Its greatest expansion in the XII th century occupied today's Spanish provinces of Asturias, León, Zamora, Salamanca, the western half of Cáceres an Badajoz, the Portuguese region of Miranda do Douro and the eastern bank of Cantabria. Asturian-Leonese never had a unified linguistic standard and several dialects were spoken all over this area.