ARDAN, a small independent linguistic stock of South American Indians, so called from the Ardas, the most important of its tribes. The Ardan tribes lived west of Iquitos in north eastern Peru, on the upper Mazan and Nanay rivers, tributaries of the lower Napo. They were of simple culture, and beyond the fact that their language (now extinct) seems to be quite unrelated to any other, little or nothing is known of them.
See A. F. Chamberlain, "Sur quelques families linguistiques," etc. (Journal Soc. Americanistes de Paris [n.s.), vol. vii., pp. .