P. maximus may refer to: Paralongidorus maximus, a plant pathogenic nematode species Pecari maximus, the giant peccary, a possible fourth species of peccary, discovered in Brazil Pecten maximus, the great scallop or king scallop, an edible saltwater clam species Physalaemus maximus, a frog species endemic to Brazil Prosaurolophus maximus, a hadrosaurid dinosaur species from the Late Cretaceous of North America P.Maximus, a music producer and song writer, Phineas Maphet See also Maximus (disambiguation)