Chileans are an ethnic group and nation native to the country of Chile and its neighboring insular territories. Most Chileans share a common culture, history, ancestry and language. The overwhelming majority of Chileans are the product of varying degrees of admixture between European ethnic groups with peoples indigenous to Chile's modern territory. Chile is a multilingual and multicultural society, but an overwhelming majority of Chileans have Spanish as their first language and either are Christians or have a Christian cultural background.

The Mapuche are a group of indigenous inhabitants of south-central Chile and southwestern Argentina, including parts of Patagonia. The collective term refers to a wide-ranging ethnicity composed of various groups who share a common social, religious, and economic structure, as well as a common linguistic heritage as Mapudungun speakers. Their homelands once extended from Choapa Valley to the Chiloé Archipelago and later spread eastward to Puelmapu, a land comprising part of the Argentine pampa and Patagonia. Today the collective group makes up over 80% of the indigenous peoples in Chile and about 9% of the total Chilean population. The Mapuche are concentrated in the Araucanía region. Many have migrated from rural areas to the cities of Santiago and Buenos Aires for economic opportunities, more than 92% of the Mapuches are from Chile.