Hadongsuchus is an extinct genus of protosuchian crocodylomorph. Fossils have been found from the Hasandong Formation outcropping on Hadong, South Korea. The formation dates back to the Hauterivian and Barremian stages of the Early Cretaceous. A complete fossil skull was discovered in 2002, and the genus was named in 2005 on the basis of this holotype. Certain features of the third premaxillary tooth help distinguish it from other related crocodylomorphs.