| Named By: | C. Apaldetti, R. N. Martinez, O. A. Alcober & D. Pol in 2011 |
| Time Period: | Lower Jurassic |
| Location: | Argentina - Quebrada del Barro Formation |
| Size: | About 2.5 meters long |
| Diet: | Herbivore |
| Fossil(s): | Skull, mandible and partial post cranial remains including vertebrae, pelvis, shoulder and a rib |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropodomorpha | |
Leyesaurus is an extinct genus of massospondylid sauropodomorph dinosaur known from the San Juan Province, northwestern Argentina.