Cryptanaerobacter phenolicus is a gram-positive anaerobic bacterial species in the genus Cryptanaerobacter.

The genus Cryptanaerobacter contains a single species, namely C. phenolicus (Type species of the genus).; Neo-Latin noun phenol -olis, phenol; Latin masculine gender suff. -icus, suffix used in adjectives with the sense of belonging to; Neo-Latin masculine gender adjective phenolicus, belonging to phenol.)