Patagosuchus is an extinct genus of peirosaurid crocodyliform known from the early Late Cretaceous Portezuelo Formation of Neuquén Province, western central Argentina.

MANE-PV 1 was discovered at the Baal Quarry, in the Loma de La Lata area, near the northern coast of Lago Los Barreales, 12 km south of Añelo City, southeastern Neuquén Province of Patagonia.

Patagosuchus represents the third peirosaurid named from the Neuquén Group, with Gasparinisuchus peirosauroides known from the younger Santonian to early Campanian Bajo de la Carpa and Anacleto Formations,[1] and the more recently named Bayomesasuchus hernandezi from the underlying late Cenomanian to early Turonian Cerro Lisandro Formation representing the fourth.

[2] These represent the five known Patagonian peirosaurids, together with Barcinosuchus gradilis from the Aptian to Albian Cerro Barcino Formation of Chubut Group.

The generic name refers to Patagonia, and suchus, Latinized from the Greek souchos, an Egyptian crocodile god.