Morrinhosuchus is an extinct genus of notosuchian crocodyliform from the Late Cretaceous Adamantina Formation of Brazil.

It is known from a mandible and a portion of the front of the skull collected from the municipality of Monte Alto in São Paulo state.

There are also differences in the shape of the rostrum between the two genera, as Morrinhosuchus has a higher, more pointed snout with less constriction than in Mariliasuchus.

[1] The Adamantina Formation, which is Turonian to Santonian in age, was deposited in semi-arid conditions around 95 million years ago.

Morrinhosuchus was found in an outcrop of reddish sandstone with carbonate nodules, concretions, and areas of intense bioturbation.