Atacamatitan
| Atacamatitan Temporal range: Late Cretaceous,  | |
|---|---|
| Holotype SGO-PV-961 | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Dinosauria | 
| Clade: | Saurischia | 
| Clade: | †Sauropodomorpha | 
| Clade: | †Sauropoda | 
| Clade: | †Macronaria | 
| Clade: | †Titanosauria | 
| Clade: | †Lithostrotia | 
| Genus: | †Atacamatitan Kellner et al., 2011 | 
| Type species | |
| †Atacamatitan chilensis Kellner et al., 2011 | |
Atacamatitan (meaning "Atacama Desert titan") is a genus of titanosaurian sauropod dinosaurs from the Late Cretaceous Tolar Formation of Chile.