The Geoncheonri Formation (Korean: 건천리층; Hanja: 乾川里層; RR: Geoncheonli-cheung) is an Early Cretaceous (Aptian-Albian) geologic formation of the in the of southeast South Korea. Fossil ornithopod tracks, as well as fossils of Kirgizemys have been reported from the lacustrine siltstones and mudstones of the formation.