| Acronym | Definition |
|---|
| ATB | Ability to Benefit |
| ATB | All The Best |
| ATB | Antibiotic |
| ATB | Alberta Treasury Branches |
| ATB | Active Time Battle (roleplaying game) |
| ATB | Across the Board |
| ATB | André Tanneberger (musician) |
| ATB | America The Beautiful |
| ATB | Alternate Top Bevel (saw blades) |
| ATB | All Terrain Bike |
| ATB | All Terrain Binoculars (ruggedized all-weather binoculars) |
| ATB | All-Time Best |
| ATB | Advanced Technology Bomber (B-2) |
| ATB | Automatic Torque Biasing |
| ATB | Association for Tropical Biology |
| ATB | All Terrain Board |
| ATB | All Trunks Busy |
| ATB | Asphalt Treated Base |
| ATB | America's Talent Bank |
| ATB | Articulated Total Body |
| ATB | Air Terminal Building |
| ATB | Automated Ticket and Boarding Pass (airline industry) |
| ATB | Aged Trial Balance (accounts receivable) |
| ATB | Articulated Tug and Barge |
| ATB | Automatische Trein Beinvloeding (Dutch: automatic train control) |
| ATB | Agricultural Training Board |
| ATB | Amazon Tree Boa (snake) |
| ATB | Advanced Tactical Bomber |
| ATB | Air to Boil (temperature) |
| ATB | Air Turn Back (aviation) |
| ATB | After the Bang (period just after the Big Bang) |
| ATB | Available to Build (Dell) |
| ATB | Air Transport Board (Canada) |
| ATB | Anti-Terrorist Branch (UK) |
| ATB | Analytical Tool Box |
| ATB | Austrian Testing Board |
| ATB | Air Technical Battalion |
| ATB | Army Training Board |
| ATB | Antenna Test Bed |
| ATB | Above-Ground Telecommunications Backbone |
| ATB | Authorization to Buy (government contracting) |
| ATB | Aviation Test Board |
| ATB | Air Target Board |
| ATB | Association Thiaisienne de Badminton (French badminton association) |
| ATB | Airborne Test Bed |
| ATB | Air Transport Brigade |
| ATB | Army Transportation Board |
| ATB | Atypical Tuberculosis |
| ATB | Automatic Ticket Barrier |
| ATB | Advanced Training Base |
| ATB | Aviation Training Board |
| ATB | Auto Theft Bureau (law enforcement) |
| ATB | Atmospheric Test Ban |
| ATB | Adaptive Two-step Allowing Backtracking (IEEE) |
| ATB | Anti-Terrorism Bill (various locations) |
| ATB | Auburn Tourism Board (Washington) |