N. gracilis

N. gracilis may refer to:
 * Naticopsis gracilis, an extinct sea snail species in the genus Naticopsis and the family Neritopsidae
 * Nectandra gracilis, a plant species found in Ecuador and Peru
 * Neolamprologus gracilis, a fish species endemic to Lake Tanganyika
 * Nepenthes gracilis, the slender pitcher-plant, a very common lowland pitcher plant
 * Nyctosaurus gracilis, a pterodactyloid pterosaur species