Dufrenoyia is an extinct genus of Cretaceous ammonites included in the family Parahoplitidae.

These fast-moving nektonic carnivores lived in the Cretaceous period (Aptian age).

[2] The type species of the genus is Ammonites dufrenoyi.

[1] [1] Fossils of species within this genus have been found in the Cretaceous sediments of Germany, Mexico, Morocco, Spain, the United Kingdom, United States, Colombia and Venezuela.

This Ammonitida-related article is a stub.