Catutosaurus is an ophthalmosaurid ichthyosaur from the Late Jurassic Vaca Muerta Formation of Argentina.

It contains a single species, Catutosaurus gaspariniae.

[1] The generic name refers to the Los Catutos site.

The holotype is MOZ-PV-1854, a skull, lower jaws and front torso.

Referred are specimina MOZ-PV-103, a skull with lower jaws, and MOZ-PV-7260, a set of snout fragments.