Cethegus colemani is a species of mygalomorph spider in the Euagridae family. It is endemic to Australia. It was described in 1984 by Australian arachnologist Robert Raven.
The species occurs in north-eastern Queensland in closed forest habitats. The type locality is Mareeba. It has also been recorded from Cairns.
The spiders are terrestrial predators which construct silk shelters.