Tambatitanis (meaning "Tamba giant", after Tamba, the name given to the northwest of Kansai, Japan[1]) is an extinct genus of titanosauriform, possibly a titanosaurian, sauropod dinosaur from the Early Cretaceous (early Albian) aged Ohyamashimo Formation of the Sasayama Group. It is known from a single species, Tambatitanis amicitiae, known from a partial skeleton.