Algoasaurus (/ælˌɡoʊ.əˈsɔrəs/; "Algoa Bay reptile") is a genus of sauropod dinosaur from the Tithonian-early Valanginian-age Late Jurassic-Early Cretaceous Upper Kirkwood Formation of Cape Province, South Africa. It was a neosauropod; although it has often been assigned to the Titanosauridae, there is no evidence for this, and recent reviews have considered it to be an indeterminate sauropod.