| Named By: | A. B. Arcucci in 1987 |
| Time Period: | Middle Triassic, 236-234 Ma |
| Location: | Argentina - Chanares Formation |
| Size: | Roughly estimated at about 1 meter long |
| Diet: | Uncertain |
| Fossil(s): | Partial remains including femur, tibia, pubis and some vertebrae |
| Classification: | | Chordata | Reptilia | Dinosauromorpha | Dinosauriformes | |
Pseudolagosuchus (meaning "false Lagosuchus") is a genus of dinosauromorph from the Middle Triassic (Ladinian) Chanares Formation of Argentina. It may be a junior synonym of Lewisuchus, but there is very little overlapping material. It was a small reptile which was probably about one meter long, 30 centimeters (1 ft) tall, and weighed approximately 2 kilograms (5 lb). It is known only from a pubis, a femur, a tibia, and vertebrae. Both Sterling Nesbitt, Christian Sidor et al. (2010) and Matthew Baron, David Norman and Paul Barrett (2017) treated this taxon as being synonymous with Lewisuchus.