Campylodoniscus (meaning 'bent toothed', from Greek καμπυλος meaning 'bent' or 'curved' (as of a bow) and οδους meaning 'tooth') was a genus of sauropod dinosaur from the Late Cretaceous Period of what is now Argentina. The type species, C. ameghinoi, was first described by Friedrich von Huene in 1929. It lived during the Campanian to Maastrichtian and was around 20 meters in length.