Bretesuchus is an extinct genus of sebecosuchian mesoeucrocodylian within the family Sebecidae known from northwestern Argentina.

[3] Fossils of Bretesuchus have been found in the El Brete locality, from the Maíz Gordo Formation of northwestern Argentina and date back to the Thanetian stage of the late Palaeocene, about 58.7-55.8 million years ago.

[2] The highly bent premaxilla shows that it lies within the suborder Sebecosuchia, a group of mostly South American terrestrial carnivorous crocodylomorphs with distinctive laterally compressed snouts.

[2] In 2007, a species of Sebecus, S. querejazus from the Early Paleocene Santa Lucia Formation in Bolivia, was reclassified as a bretesuchid.

The generic name refers to the "El Brete" locality, where the fossil remains were found, and suchus, Latinized from the Greek souchos, an Egyptian crocodile god.