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