T. gracilis

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