| Named By: | B. J. Gonzalez Riga, E. Previtera & C. A. Pirrone in 2009 |
| Time Period: | Turonian-Coniacian~91-88 Ma |
| Location: | Argentina, Mendoza Province - Portezuelo Formation |
| Size: | Unavailable |
| Diet: | Herbivore |
| Fossil(s): | Partial post cranial remains, including ribs, vertebrae and limb bones |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropoda | Titanosauriformes | |
Malarguesaurus is a genus of titanosauriform sauropod dinosaur from the Late Cretaceous of Mendoza Province, Argentina. Its fossils, consisting of tail vertebrae, chevrons, ribs, and limb bones, were found in the late Turonian-early Coniacian-age (~89 million years old) Portezuelo Formation of the Neuquen Group. The type species, described by Gonzalez Riga et al. in 2008, is M. florenciae.