Criodion tomentosum is a species in the longhorn beetle family Cerambycidae. It is found in Brazil, Argentina, and Paraguay.
Research in 2021 has determined that species Criodion angustatum and Criodion pilosum are synonyms of Criodion tomentosum. Cerambycidae Database, Catalogue of Life, and New World Cerambycidae Catalog have accepted these changes.