The Tataviam language was spoken by the Tataviam people of the upper Santa Clara River basin, Santa Susana Mountains, and Sierra Pelona Mountains in southern California. It had become extinct by 1916 and is known only from a few early records, notably a few words recorded by Alfred L. Kroeber and John P. Harrington in the early decades of the 20th century. These word lists were not from native speakers, but from the children of the last speakers who remembered a few words and phrases.