T1

T1 may refer to:

Computing and telecommunications

* Digital Signal 1, a telecommunications standard, sometimes called a "T1 Line"
* Cork encoding, a character encoding used in computer programming and telecommunications
* UltraSPARC T1, a microprocessor

Medicine

* in anatomy:
** The first of the thoracic vertebrae in the vertebral column
** The first of the thoracic nerves emerging from the vertebrae
* a non-small cell lung carcinoma staging code for a tumour less than 3 cm in its greatest dimension

Vehicles and transportation

Automotive

* Caparo T1, a British sports car
* Ford T1 platform, a vehicle architecture used in large SUVs
* Mercedes-Benz TN, a van/truck also called a transporter

Aircraft

* Fuji T-1, a 1958 Japanese trainer aircraft
* T-1 Jayhawk, a jet aircraft used by the United States Air Force

Other transportation

* Bombardier T1, a subway car used by the Toronto Transit Commission
* PRR T1, a locomotive
* Tatra T1, a 1951 Czechoslovakian tramcar
* Paris Tramway Line 1
* Terrible One, a bicycle company

Other meanings

* T-1 (Terminator character), a fictional robot in the "Terminator" film franchise
* T1 General, a tax form used in Canada
* T₁ space, a kind of topological space
* A514, a type of steel
* Spin-lattice relaxation time, a concept in Nuclear Magnetic Resonance and Magnetic Resonance Imaging