ITT

ITT may refer to:

Communication

 * Infantry-Tank Telephone, a device allowing infantrymen to speak to the occupants of armoured vehicles.

Mathematics

 * Intuitionistic type theory, other name of Martin-Löf Type Theory
 * Intensional type theory

Business

 * ITT Inc. (formerly International Telephone & Telegraph), US
 * Invitation to tender for a contract
 * ITT Semiconductors

Education

 * ITT Technical Institute, US
 * Former Institute of Technology, Tallaght, Dublin, Ireland
 * Institute of Technology, Tralee, Ireland

Media

 * Cousin Itt, of the fictional Addams Family
 * "I.T.T (International Thief Thief)", a political screed about ITT Corp. by Fela Kuti

Medicine

 * Insulin tolerance test
 * Intention to treat analysis in medicine
 * Intermittent testicular torsion

Sport

 * Individual time trial in bicycle racing