BCT is an abbreviation that can mean:
- Business Chinese Test
- IATA code for Boca Raton Airport,located in Palm Beach County,Florida
- BCTGM, Bakers, confectioners, and Tobacco Workers Union
- Baire category theorem, a result from general topology
- Banque Centrale de Tunisie in Tunisia
- Basic Cadet Training, initial military training for new cadets at the United States Air Force Academy
- Basic Combat Training
- The Bat Conservation Trust, a British charity
- Behavior Change Technique
- The Blue Carpet Treatment, an album by Snoop Dogg
- Box compression test, a measure in corrugated fiber board packaging design and testing
- Brigade Combat Team - the basic deployable unit of maneuver in the United States Army
- Broward County Transit, a Fort Lauderdale-based system of public transportation
- Buffalo Central Terminal, a railroad station located in Buffalo, New York
- Mumbai Central Railway station code
- Purple Line (Washington Metro), a proposed addition to the Washington Metrorail (formerly known as the Bi-County Transitway)
- BC Transit, The company responsible for public transit in most of British Columbia
- Body Centered Tetragonal, a type of crystal structure, see Tetragonal crystal system
- Another abbreviation for Best Available Control Technology, used in environmental legislation
- Be Concern To, if you send a(massage, Email, ..., etc.) and you need to specify someone to be concern from receivers
- Books, Comics, and Things A store where you buy books, comics, and other rpg, or gaming supplies