The Jiufotang Formation (; previoiusly transliterated as Chiufotang Formation) is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms (see Jehol Biota). It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with estimates ranging from the Late Jurassic to the Early Cretaceous. New uranium-lead dates reveal the formation is deposited in the Aptian stage of the Early Cretaceous. Fossils of Microraptor and Jeholornis are from the Jiufotang.
Several mammaliamorph specimens have been found from the Jiufotang, but only a few have been formally described and named.
Skeletal and dental remains are known, the latter was assigned to an indeterminate titanosauriform.
A large theropod tooth representing a distinct taxon from Sinotyrannus is known.