Phyllodon is a genus of small ornithischian dinosaur from the Late Jurassic (Kimmeridgian) Camadas de Guimarota Formation of Leiria, Portugal and possibly also the Middle Jurassic (Bathonian) Chipping Norton Limestone of England. It may have been closely related to contemporaneous ornithischian dinosaurs from North America. This genus is known from teeth and possibly partial lower jaws. The name is also in use for a genus of modern moss, but this is not considered to be a problem because the two organisms are in two different kingdoms.