Macrodontophion (meaning "long-toothed snake") is the name given to a dubious genus of reptile from the Late Jurassic. It was a possible dinosaur, plesiosaur, or crocodylian. The type species, Macrodontophion (sp), was described by Zborzewsky in 1834, but is considered a nomen dubium, because it is based on a sole tooth. This tooth was found in Ukraine.