| Rank | Abbreviation | Meaning |
|---|
| ***** | ABTC | American Board for Tarot Certification
| |
| *** | ABTC | Alberta Building Trades Council
| |
| *** | ABTC | ALTOONA BUS TEST CENTRE
| |
| *** | ABTC | APEC Business Travel Card
| |
| *** | ABTC | Associação Brasileira dos Transportadores de Cargas
| |
| *** | ABTC | Alcohol Beverage and Tobacco Control
| |
| *** | ABTC | American Board of Transplant Certification
| |
| *** | ABTC | Australian Business Telephone Company
| |
| *** | ABTC | Atlantic Ballet Theatre of Canada
| |
| ** | ABTC | Auckland Baptist Tramping Club
| |
| ** | ABTC | APEC Business Travelers Card
| |
| ** | ABTC | Associação Brasileira de Transportadores de Carga
| |
| ** | ABTC | Air Battlespace Training Centre
| |
| ** | ABTC | American Black and Tan Coonhound
| |
| ** | ABTC | Alternative Behavior Treatment Centers
| |
| ** | ABTC | Automatic Boiler Tube Cutter
| |
| * | ABTC | Adaptive Block Truncation Coding
| |
| * | ABTC | American Board of Transplant Coordinators
| |
| * | ABTC | Air Basic Training Command
| |
| * | ABTC | Alsey Brick and Tile Company
| |
| * | ABTC | American Baptist Theological Center
| |
| * | ABTC | Andetur Brazilian Travel Club
| |
| * | ABTC | Ancilla Business Training Center
| |
| * | ABTC | Abbots Bromley Tennis Club
| |
| * | ABTC | Agribiotech Canada, Inc.
| |