| Abbreviation | Definition |
|---|---|
| ABTA | American Brain Tumor Association's |
| ABTA | American Bridge Teachers' Association |
| ABTA | Associa????o Brasileira de Televis??o por Assinatura |
| ABTA | Associação Brasileira de Televisão por Assinatura |
| ABTB | Activity Based and Tour Based |
| ABTB | Angola By The Bay |
| ABTB | Antigua and Barbuda Transport Board |
| ABTB | Audio By The Bay |
| ABTE | Aliments Bioprocedes Toxicologie Environnements |
| ABTL | Apapa Bulk Terminal Limited |
| ABTR | Actinide Burner Test Reactor |
| ABTR | Advanced Burner Test Reactor |
| ABTR | American Boston Terrier Rescue |
| ABTR | Arizona Board of Technical Registration |
| ABTR | Auto Bomba Tanque Resgate |
| ABTV | Abaca Bunchy Top Virus |
| ABTV | Anderson Bauman Tourtellot Vos |
| ABU | AIDS Budget Unit |
| ABU | Algemene Bond Uitzendondernemingen |
| ABU | Alisher Burkhanovich Usmanov |