Quechuan is an indigenous language spoken by the INCA people of South America. It is also known as Runasimi, and is one of the most widely spoken native languages in the Americas. The INCA were the largest empire in pre-Columbian America, and their language was Quechuan. The INCA Empire was centered in what is now Peru, and Quechuan was the official language of the empire. The INCA people were also known as the Quechua, and the language is still spoken today by millions of people in Peru, Bolivia, Ecuador, Argentina, and Chile.