| Acronym | Definition |
|---|
| BTB➣Believed-to-Be (US DoD) |
| BTB➣Badischer Turner Bund (German: Baden Gymnastics Federation; Baden, Germany) |
| BTB➣Back to Bed |
| BTB➣Back To Basics |
| BTB➣Business to Business (usually seen as B2B) |
| BTB➣Back-To-Back |
| BTB➣Be the Beast |
| BTB➣Branch Target Buffer |
| BTB➣Bad Taste Bear(s) |
| BTB➣Bob's Track Builder (gaming software) |
| BTB➣Belize Tourism Board |
| BTB➣Black to Black |
| BTB➣Bass Treble Boost |
| BTB➣Back to Back |
| BTB➣Board Technical Bulletin |
| BTB➣Break the Barriers |
| BTB➣Base-to-Base (gaming) |
| BTB➣Bob the Builder (cartoon) |
| BTB➣Bog Te Blagoslovio (Croatian: God Bless You) |
| BTB➣Body to Body |
| BTB➣Bite the Bullet |
| BTB➣Breakthrough Bleeding |
| BTB➣Burn the Bridge |
| BTB➣Bring to Boil (cooking) |
| BTB➣By the Book |
| BTB➣Big Team Battle (Halo 2) |
| BTB➣Bumper to Bumper |
| BTB➣Bride to Be |
| BTB➣Ban the Bag (plastic bag ban advocacy) |
| BTB➣Bringing Tap Back (Canada) |
| BTB➣Banca di Trento E Bolzano (Italian bank) |
| BTB➣Between the Buttons (Rolling Stones album) |
| BTB➣Botswana Tourism Board (est. 2004) |
| BTB➣Below the Belt |
| BTB➣Beyond the Bell |
| BTB➣Brigade Troops Battalion (US Army) |
| BTB➣Beating the Blues (UK) |
| BTB➣Board Technical Bulletin (scientology) |
| BTB➣Bouchon de Tir à Blanc (French: Blank Firing Cap) |
| BTB➣Back to Business |
| BTB➣Back to Base |
| BTB➣Bring That Booty |
| BTB➣Book-To-Bill |
| BTB➣Bric-a-Brac, Tramtrack, Broad-complex (domain) |
| BTB➣Beyond the Beyond (game) |
| BTB➣Bay to Breakers (annual footrace; San Francisco, CA) |
| BTB➣Business Telephone Banking (various companies) |
| BTB➣Boeuf de Tradition Bouchère (French: Traditional Beef Butcher) |
| BTB➣Big Ten Burrito (Ann Arbor, MI) |
| BTB➣Beyond the Breakers (offshore fishing) |
| BTB➣Bus Tie Breaker |
| BTB➣Banco Toyota do Brasil (Brazilian bank) |
| BTB➣By The By |
| BTB➣Bridge to Bridge (ship to ship communications) |
| BTB➣Been There Bro |
| BTB➣Basic Test Battery |
| BTB➣Bromethymol Blue |
| BTB➣Before the Bang (period just before the Big Bang) |
| BTB➣British Tourism Board |
| BTB➣Beyond the Body |
| BTB➣Belgische Transportarbeiders Bond |
| BTB➣Bad'in Town Bezak (French badminton club) |
| BTB➣Benoît Tapis Brosse (French carpet supplier) |
| BTB➣Better Than Beer |
| BTB➣Burton Third Bombers (dorm residents; Massachusetts Institute of Technology; Cambridge, MA) |
| BTB➣Body Tune Box (magnetic resonance imaging) |
| BTB➣British Tourist Board |
| BTB➣Blind Transmission Broadcast (clandestine communications) |
| BTB➣Brett Taylor Bailey (foundation) |
| BTB➣Beyond the Barre (est. 1999; Canada; dance studio) |
| BTB➣Big Town Bucks (online business) |