Colossochares is an Afrotropical genus of water scavenger beetle in the family Hydrophilidae represented by two described species.

[1] The genus Colossochares was created in 2021 to group two species of Afrotropical water scavenger beetles in the subfamily Acidocerinae that were formerly placed in the genus Helochares.

[1] Evidence for separating these species from Helochares and constituting a new genus was provided by molecular data.

[2] Relatively large beetles (8.5–14.0 mm), dark brown in coloration, very convex in lateral view.

A diagnosis of the genus was presented by Girón and Short.