IBT or ibt may refer to:
Organizations
Institute for Bible Translation Investors Bank & Trust, a former custodian bank which merged into State Street Bank and Trust Company International Bridge and Terminal Company, a railway in Canada International Brotherhood of Teamsters, a labor union, commonly known as Teamsters Aarhus University, Institute of Business and Technology (AU-IBT), Herning, Denmark Industrial Bio-Test Laboratories, a defunct American research company
Other uses International Business Times, a global business and financial newspaper Identity by type, a characteristic of some genetic alleles Immunobead Test (IBT), see antisperm antibodies Indirect Branch Tracking, an Intel technology for enforcing control-flow integrity Inference-based therapy, a psychotherapy for treating obsessive-compulsive disorder International Business and Technology Program, also known as IBT Internet-based Test (TOEFL iBT), of TOEFL
Interbasin transfer, a transfer of water from one river basin to another