Hahnodon is a genus of extinct mammal of the Lower Cretaceous. It is generally considered to be a relatively early member of the also extinct order Multituberculata, but some studies suggest that it was instead a haramiyid. It lived in Morocco during the "age of the dinosaurs." It is the only genus within the family Hahnodontidae.The family Hahnodontidae and genus Hahnodon ("Hahn's tooth") were named by Sigogneau-Russell D.