Normanniasaurus (/nɔːrˈmæniəˌsɔːrəs/ Normannia lizard) is an extinct genus of basal titanosaur sauropod known from the Early Cretaceous (Albian stage) Poudingue Ferrugineux of Seine-Maritime, northwestern France.

Normanniasaurus is known from the holotype MHNH-2013.2.1.1 through MHNH-2013.2.1.12 housed at the Museum d’histoire naturelle du Havre, a partial skeleton including presacral vertebrae fragments, a partial sacrum, an anterior and a middle caudal vertebrae, a right scapula, fragments of both ilia and ischia, the proximal end of a femur and the proximal part of a fibula.

A posterior caudal centrum, housed at the Muséum d’Histoire Naturelle de Rouen, discovered at the end of the nineteenth century and described by Buffetaut in 1984,[1] was also referred to this species.

All specimens were collected on the north side of Cap de la Hève at Bléville, Le Havre, dating to the early to middle Albian stage of the Early Cretaceous period, although the referred specimen is apparently from a younger level of the Albian.

[2] The late Early Cretaceous radiation of basal Titanosauria in South America, Europe and Africa is unusual.