Redondavenator (meaning "Redonda Formation hunter") is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin.

It is notable for its large size; the minimum estimated skull length for the holotype individual is 60 centimetres (2.0 ft).

A partial lower jaw was once thought to belong as well, but was found to have come from a phytosaur.

The preserved portion of the skull includes the premaxillae (snout tip) and parts of the maxillae (main tooth-bearing bones of the upper jaw) and nasals, in front of the antorbital fenestra.

They interpreted it as filling a large terrestrial predator role that had been left empty by the extinction of "rauisuchians".