| Named By: | David Meredith Seares Watson in 1912 |
| Time Period: | Middle Triassic, 246 Ma |
| Location: | South Africa - Burgersdorp Formation |
| Size: | About 30 centimetres long |
| Diet: | Herbivore |
| Fossil(s): | Skull and partial skeletons |
| Classification: | | Chordata | Reptilia | Rhynchosauria | |
Mesosuchus is an extinct genus of basal Rhynchosaur from early Middle Triassic (early Anisian stage) deposits of Eastern Cape, South Africa. It is known from the holotype SAM 5882, a partial skeleton, and from the paratypes SAM 6046, SAM 6536, SAM 7416 and SAM 7701 from the Aliwal North Euparkeria site. Mesosuchus is quite small, spanning around 30 cm in length. Mesosuchus was discovered and named by David Meredith Seares Watson in 1912.