Atsinganosaurus is a genus of titanosaurian dinosaur which existed in what is now France during the late Cretaceous period. Well-preserved remains (and the only known) of Atsinganosaurus were collected from the Grès à Reptiles Formation of the Aix-en-Provence Basin. Atsinganosaurus was first described by Géraldine Garcia, Sauveur Amico, Francois Fournier, Eudes Thouand and Xavier Valentin in 2010, and the type species is Atsinganosaurus velauciensis.