chemistry T1 Aquarii, a star T1 Carinae, a star Soyuz T-1, a 1979 space mission T1 space, a topological space satisfying the T1 separation axiom , the 1-torus Spin–lattice relaxation time in nuclear magnetic resonance and magnetic resonance imaging Products vivo T1 series, the 5 smartphones manufactured by Vivo Communication Technology Co. Other uses T1 (album), 2018 album by Tatianna T1 (classification), a para-cycling classification T1 General, a tax form used in Canada T-1 visa, allowing victims of human trafficking to remain in the United States Tour T1, an office skyscraper in La Défense, Paris, France T1 Mall of Tallinn, shopping and entertainment centre in Tallinn, Estonia Estonian national road 1, officially T1, connecting Tallinn and Narva T1 (esports), Korean esports team. Target One, a Mesoamerican archaeological site in Honduras T1, a tornado intensity rating on the TORRO scale T+1, "trade date plus one day" in financial markets Tekken, a 1994 fighting game tyler1, an American internet personality and streamer on Twitch See also 1T (disambiguation) T (disambiguation)