| Named By: | Rodolfo A. Coria, Bernardo Gonzalez Riga & Silvio Casadio in 2012 |
| Time Period: | Late Cretaceous, 76-70 Ma |
| Location: | Argentina, La Pampa Province - Allen Formation |
| Size: | Unavailable |
| Diet: | Herbivore |
| Fossil(s): | Partial post cranial remains |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda | Hadrosauridae | |
Lapampasaurus is an extinct genus of hadrosaurid iguanodont known from the Late Cretaceous Allen Formation (late Campanian or early Maastrichtian stage) of La Pampa Province, Argentina. It contains a single species, Lapampasaurus cholinoi.
The generic name refers to the Argentine province of La Pampa. The specific name honours the late collector Jose Cholino. The material includes cervical, dorsal, sacral and caudal vertebrae, the forelimb girdle, and the partial hindlimb.