Andean ontologies can be used to improve the interpretation and understanding of pre-Hispanic societies and their history. Relevant anthropological, archaeological, historical and linguistic sources are reviewed from which the main Andean ontologies have emerged. Furthermore, in this chapter, Andean terms such as Camay, Pacha, Huaca and Runa are discussed, as well as their origins, their explanatory potential of Andean phenomena and their applications to pre-colonial archaeology. Finally, this chapter reviews the reasons why Andean ontologies should be considered in archaeological explanations.