T1, T01, T.1 or T-1 may refer to: Biology The first of the thoracic vertebrae in the vertebral column Thoracic spinal nerve 1, a nerve emerging from the vertebrae Cyclin T1, a human gene GalNAc-T1, a human gene Ribonuclease T1, a fungal endonuclease TNM staging system, classification for a small cancer tumor Computing Apple T1, a system on a chip used by Apple T1 font, or cork encoding, a character encoding T1, a component of the T-carrier system for telecommunication UltraSPARC T1, a microprocessor Transportation Aircraft Raytheon T-1 Jayhawk, a jet aircraft used by the US Air Force for advanced pilot training Lockheed T2V SeaStar, a.k.a. T1 Seastar, a carrier-capable jet trainer in the US Navy Fuji T-1, Japan's first jet-powered trainer aircraft Sopwith Cuckoo, a British biplane torpedo bomber of 1918 Automobiles Bentley T-series, Bentley Motors model in the UK Caparo T1, a 2006 British sports car CWS T-1, first serially-built car manufactured in Poland Ford T1 platform, a large SUV automobile platform Mercedes-Benz T1, a 1977 van/truck also called a transporter Volkswagen Type 2 (T1), the first generation of Volkswagen transporter Rail T series (Toronto subway), a subway car in Toronto, Canada North Shore & Western Line, a commuter rail line in Sydney, Australia Île-de-France tramway Line 1, a.k.a. T1, a tramway near Paris, France LSWR T1 class, an 1888 0-4-4T steam tank locomotives class Pennsylvania Railroad class T1, a 1942 4-4-4-4 steam locomotive class Reading T-1, a 1945 4-8-4 steam locomotive class LNER Class T1, a class of British steam locomotives Tatra T1, a 1951 Czechoslovakian tramcar T1 (Istanbul Tram), a tram line in Istanbul, Turkey Nakano Station (Tokyo), station number T-01 in Tokyo Metro Tozai Line Roads T1 road (Zambia), a road in Zambia Tanzam Highway, designated T1 in Tanzania Ships USS T-1, several United States Navy ships HMNZS Matai (T01), a Royal New Zealand Navy lighthouse tender of 1941 MV Transpacific (T-1), a 1992 US oil tanker Yugoslav torpedo boat T1, a torpedo boat in the Yugoslav Navy, 1921–1941 T1 tanker a mass-produced tanker used during and after World War II Buses T1 Bristol–Thornbury, a bus route in England Tanks and weapons T1 Light Tank, a U.S. prototype tank EE-T1 Osório, a 1985 Brazilian main battle tank AC NM AE T1 mine, a Brazilian anti-tank blast mine AP NM AE T1 mine, a Brazilian anti-personnel mine G7a torpedo, a WWII German torpedo Mathematics, physics and