Ommatoiulus moreleti (spelt moreletii in older publications), commonly known as the Portuguese millipede, is a herbivorous millipede native to the southern Iberian Peninsula where it shares its range with other Ommatoiulus species. From here, it has spread by international commerce to a number of new localities. This species was accidentally introduced into Australia without its natural enemies and has since become an invasive pest. A number of methods have been developed to manage this millipede.