Southern Quechua

Southern Quechua (Quechua: Urin qichwa, Spanish: quechua sureño), or simply Quechua (Qichwa or Qhichwa), is the most widely spoken of the major regional groupings of mutually intelligible dialects within the Quechua language family, with about 6.9 million speakers. Besides Guaraní it is the only indigenous language of America with more than 5 million speakers. The term Southern Quechua refers to the Quechuan varieties spoken in regions of the Andes south of a line roughly east–west between the cities of Huancayo and Huancavelica in central Peru. It includes the Quechua varieties spoken in the regions of Ayacucho, Cusco and Puno in Peru, in much of Bolivia and parts of north-west Argentina. The most widely spoken varieties are Cusco, Ayacucho, Puno (Collao), and South Bolivian.

In the traditional classification of the Quechua language family by Alfredo Torero, Southern Quechua is equivalent to Torero's 'Quechua IIc' (or just 'QIIc'). It thus stands in contrast to its many sister varieties within the wider Quechuan family that are spoken in areas north of the Huancayo–Huancavelica line: Central Quechua (Torero's QI) spoken from Huancayo northwards to the Ancash Region; North Peruvian Quechua around Cajamarca and Incahuasi (Torero's IIa); and Kichwa (part of Torero's Quechua IIb).