Cratonopterus (meaning "craton wing") is an extinct genus of ctenochasmatid pterosaurs from the Early Cretaceous Huajiying Formation of China.

[1] The Cratonopterus holotype specimen, IVPP V 14935, was discovered in sediments of the Huajiying Formation in Fengning County, Hebei Province, China.

[1] In 2023, Jiang et al. described Cratonopterus huabei as a new genus and species of ctenochasmatid pterosaur based on these fossil remains.

[1] Due to the elongated wing metatarsal of the specimen, Jiang et al. suggested that Cratonopterus can clearly be classified as a pterodactyloid.

It can further be assigned to the Ctenochasmatidae as the proportions of the postcranial remains are most similar to members of this clade such as Forfexopterus, Elanodactylus, and Eosipterus.