| Named By: | C. Li, X. inC. Wu, L. Zhao, T. Sato & L. Wang in 2012 |
| Time Period: | Middle Triassic |
| Location: | China, Yunna Province - Falang Formation, Zhuganpo Member |
| Size: | Total length estimated about 1.5 meters long |
| Diet: | Piscivore |
| Fossil(s): | Almost complete skull and skeleton missing the tail |
| Classification: | | Chordata | Reptilia | Rauisuchia | Paracrocodylomorpha | Poposauroidea | |
Diandongosuchus is an extinct genus of archosauriform reptile, possibly a member of the Phytosauria, known from the Middle Triassic of China. The type species Diandongosuchus fuyuanensis was named in 2012 from the Falang Formation of Yunnan Province. It is a marine species that shows similarities with another Chinese Triassic species called Qianosuchus mixtus, although it has fewer adaptations toward marine life. It was originally classified as the basal-most member of the pseudosuchian clade Poposauroidea. However, a subsequent study conducted by Stocker et al. (2016, 2017) indicated it to be the basalmost known phytosaur instead.