Massaliasuchus is an extinct genus of crocodylian that is known from fossils found in Santonian-Campanian-age Upper Cretaceous rocks of southeastern France. Fossils belonging to this genus were published in 1869 by Matheron as Crocodilus affuvelensis. The new genus name was given to it in 2008 by Jeremy Martin and Eric Buffetaut. Massaliasuchus appears to have been related to early alligatoroids. It is known from remains including skull bones.