As linguas arapahoanas son un subgrupo das linguas das chairas da familia algonquina. Está formado polas linguas nawathinehena, arapaho e atsina. O nawathinehena está extinto, e o arapaho e o atsina están gravemente ameazadas.[1][2]
Goddard, Ives (2001). "The Algonquian Languages of the Plains." In Plains, Part I, ed. Raymond J. DeMallie. Vol. 13 of Handbook of North American Indians, ed. William C. Sturtevant. Washington, D.C.: Smithsonian Institution, pp. 71–79.
Marianne Mithun (1999). The Languages of Native North America. Cambridge Language Surveys. Cambridge: Cambridge University Press.