C. nitidus may refer to: Calymmaderus nitidus, a beetle species Carpodectes nitidus, the snowy cotinga, a bird species found in Costa Rica, Honduras, Nicaragua and Panama Cimolodon nitidus, a mammal species from the Upper Cretaceous of North America Copelatus nitidus, a diving beetle species Ctenopharynx nitidus, a fish species found in Malawi, Mozambique and Tanzania
See also Nitidus (disambiguation)