| Named By: | J. L. Sanz, J. E. Powell, J. Le Loeuff, R. Martinez & X. PeredainSuberbiola in 1999 |
| Time Period: | Late Cretaceous |
| Location: | Spain - Sierra Perenchiza Formation & Vitoria Formation |
| Size: | Estimated to be somewhere between 8 and 10 meters long |
| Diet: | Herbivore |
| Fossil(s): | Fragmentary and partial remains of several individuals |
| Classification: | | Chodata | Reptilia | Dinosauria | Saurischia | Sauropoda | Titanosauria | |
Lirainosaurus is a genus of titanosaur sauropod which lived in what is now Spain. The type species, Lirainosaurus astibiae, was described by Sanz, Powell, Le Loeuff, Martinez, and Pereda-Suberbiola in 1999.