Pseudolagosuchus (meaning "false Lagosuchus") is a genus of dinosauromorph from the Middle Triassic (Ladinian) Chañares 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.