Ctenochasma (meaning "comb jaw") is a genus of Late Jurassic ctenochasmatid pterosaur belonging to the suborder Pterodactyloidea.

[5] A single specimen, consisting of a partial skull with complete brain case, was found in France and housed in the collections of the Saint-Dizier Museum.

[7] Although researchers in the late 1990s and early 2000s, including Bennett and Jouve, suggested that all these species probably represented growth stages on just one kind of Ctenochasma, in a more comprehensive 2007 study, Bennett demonstrated that three distinct species could be recognized based on the number and slenderness of the teeth, which varied across all growth stages.

[7] Ctenochasma is distinguished mainly by its numerous (over 400 in adults) long, thin, curved and closely packed teeth, which lined its elongated and narrow snout.

Instead, the spatulate profile formed by the teeth probably indicate a spoonbill-like lifestyle, increasing the surface area of the jaws in order to catch small prey.

In the analysis, they recovered Ctenochasma within the family Ctenochasmatidae, more precisely within the subfamily Ctenochasmatinae, sister taxon to the tribe Pterodaustrini.