T4

• Heathrow Terminal 4 • Tiyas Military Airbase, also known as the T-4 Airbase ==Biology and medicine==

• T4 phage, a bacteriophage • Thyroxine (T4), a form of thyroid hormone • T4 or thoracic spinal nerve 4 • the fourth thoracic vertebrae of the vertebral column • A non-small cell lung carcinoma staging for a type of tumour • A CD4 + T lymphocyte • T4: an EEG electrode site according to the 10-20 system • T4, a tumor class in the TNM staging system ==Entertainment==

• T4 (Channel 4), the former daytime teen-aimed slot on Channel 4 in the UK • Terminator Salvation, sometimes referred to as Terminator 4 • Transformers: Age of Extinction, the fourth film in the live-action Transformers film series ==Software and video games==

• Text Template Transformation Toolkit, a technology developed by Microsoft • Tekken 4, a 2001 fighting game ==Rail transport==

• Eastern Suburbs & Illawarra Line, a Sydney Trains railway service • Île-de-France tramway Line 4 • T4 (Istanbul Tram) ==Vehicles==

• Dayton-Wright T-4, a 1918 American light, single-seat reconnaissance aircraft • Kawasaki T-4, a Japanese aircraft • Soyuz T-4, a space mission • Sukhoi T-4, a Soviet aircraft • Tatra T4, a 1967 Czechoslovak tram • Thaden T-4, a 1930s American four-seat all-metal cabin monoplane • Troller T4, a Brazilian off-road vehicle • Volkswagen Transporter series IV van • a model of the OS T1000 train of the Oslo Metro • Model T4 Cunningham experimental armored car, later the M1 Armored car ==Weapons and explosives==

• T-4 Atomic Demolition Munition, a small tactical nuclear bomb • G7e/T4, a Falke German torpedo • The Italian name for the high explosive RDX ==Other uses==

• Great East Road, a road in Zambia • T4 road (Tanzania), a road in Tanzania • Lockheed Martin's High beta fusion reactor prototype, called T4 • A T4 slip, a tax return form used in income taxes in Canada • Aktion T4, Nazi Germany's mass-murder of the mentally and physically disabled • Normal space in topology • Version 4 of Traveller role-playing game • T4, one of several fluorescent-lamp formats • A tornado intensity rating on the TORRO scale • SPARC T4, a microprocessor introduced by Oracle Microelectronics in 2011 ==See also==