| Roncalese | |
| Nativename: | Erronkariera |
| States: | Spain |
| Region: | Roncal, Navarre |
| Extinct: | 1991 |
| Familycolor: | grey |
| Fam1: | Basque |
| Fam2: | Eastern Navarrese |
| Map: | Erronkariera.svg |
| Isoexception: | dialect |
| Glotto: | ronc1236 |
| Glottorefname: | Roncalese |
Roncalese (in Basque: erronkariera, in Roncalese dialect: Erronkariko uskara) is an extinct Basque dialect once spoken in the Roncal Valley in Navarre, Spain. It is a subdialect of Eastern Navarrese in the classification of Koldo Zuazo. It had been classified as a subdialect of Souletin (otherwise spoken in the province of Soule in France) in the 19th-century classification of Louis Lucien Bonaparte, and as a separate dialect in the early-20th-century classification of Resurrección María de Azkue.[1] The last speaker of the Roncalese, Fidela Bernat, died in 1991.[2]
Roncalese preserves historical nasals which have been lost from other dialects, a fact which has proven valuable in discrediting the aizkora theory (that Basque vocabulary is continuous from the Stone Age).