As of 2015, the most widely spoken indigenous language in Peru is Quechua, with over 4 million speakers. Aymara is the other widely-spoken Peruvian indigenous language with around 2 million speakers across the Andean region of Peru, Argentina, Bolivia and Chile.
The Quechua language was the predominant language of the Inca Empire prior to the arrival of the Spanish language along with the Spanish explorers in the 16th century. Most of the remaining Quechua speakers live in the highlands region of Peru, as well as in Ecuador and Bolivia.
The Aymara language shares similarities with Quechua, although scholars have yet to determine if there is any definitive link between the two languages. Both Quechua and Aymara have official language status in Peru.