T. insignis may refer to: Tetraceratops insignis, a lizard-like synapsid species that lived during the Early Permian period Thamnochortus insignis, a grass-like restio species found in Africa Thamnophilus insignis, the streak-backed antshrike, a bird species found in Brazil, Guyana and Venezuela Thaumastoptera insignis, a crane fly species in the genus Thaumastoptera Thyreus insignis, a bee species in the genus Thyreus Tityus insignis, a scorpion species in the genus Tityus Tonicella insignis, a chiton species in the genus Tonicella Torellia insignis, a sea snail species Trachelyopterus insignis, a species of catfish Trochisciopsis insignis, an alga species in the genus Trochisciopsis
Synonyms Tadarida insignis, a synonym for Tadarida teniotis, the European free-tailed bat, a bat species found across the Old World