Massaliasuchus is an extinct monospecific genus of allodaposuchid eusuchian crocodyliform from the Late Cretaceous (Santonian–Campanian) Fuvelian Lignites of southeastern France.

Massaliasuchus was first described in 1869 by Philippe Matheron as Crocodilus affuvelensis, based on remains including skull bones.

Massaliasuchus was considered to be related to early alligatoroids.

[1] Recent cladistic analysis places Massaliasuchus as a member of Allodaposuchidae, a clade of basal eusuchians from the Late Cretaceous of southern Europe.

[4] However, Massaliasuchus is usually omitted from phylogenetic analyses since it is only represented by poorly-preserved material.