Chaetacanthus may refer to:
*
''Chaetacanthus'' (annelid), a genus of polychaetes in the family
Polynoidae
Polynoidae is a family (biology), family of marine Polychaete worms known as "scale worms" due to the scale-like elytron (Annelida), elytra on the dorsal surface. Almost 900 species are currently recognised belonging to 9 subfamilies and 167 gen ...
* ''Chaetacanthus'', a genus of plants in the family Acanthaceae, synonym of ''
Dyschoriste''
{{Genus disambiguation