T. gracilis may refer to: Taterillus gracilis, the gracile tateril or slender gerbil, a rodent species found in Africa Thomasomys gracilis, the slender Oldfield mouse, a rodent species found in Ecuador and Peru Tornieria gracilis, a dinosaur species Tribolonotus gracilis, a skink species found in New Guinea Trimeresurus gracilis, a venomous pitviper species found only in Taiwan Troglohyphantes gracilis, a Kočevje subterranean spider species Trypeta gracilis, a fruit fly species Tupaia gracilis, the slender treeshrew, a treeshrew species found in Indonesia and Malaysia Thalassina gracilis, a species of mud lobster in the genus Thalassina
See also Gracilis (disambiguation)