International Bridge and Terminal 
In Between Technology 
Intrinsic Burst Tolerance 
Integrated Berthing Test 
International Brotherhood of Teamsters 
Internet-Based Training 
Isochronous Burst Transmission 
Ibertrans Aerea 
Illinois Bell Telephone 
immunobead binding technique 
immunobead binding test 
immunobead test 
Immunobead testing 
immunoblotting technique 
immunoblotting test 
Inclined Bottom Tank 
Income Before Tax 
Income before taxes 
individual-based treatment 
Integrated Biometrics Technologies 
Integrated Bipolar Transistor 
Integrated Build Team 
Integrated Business Technologies 
Inter Base Transfers 
Interbank Transfer 
Interdepartmental Business Team 
International Ballet Theatre 
International Bridge and Terminal Comp… 
International Business Training 
International Business Traveler