| Abbreviation | Definition |
|---|---|
| AITR | Arabian International Tire Retreaders |
| AITS | Administrative Information And Technology Services |
| AITS | Administrative Information Technology Services |
| AITS | Association of Intelligent Transport Systems |
| AITS | Atlanta IT Services |
| AITS | Aviation Information and Telecome System |
| AITVENTURES | Apropos Internet Technologies Ventures |
| AIU | American International Underwriters |
| AJ | Asim Jalal |
| AJ | Aunt Jemima |
| AJAL | Association of Jamaica Attractions Ltd |
| AJB | Air Jordan Boots |
| AJC | American Jewelry Chain |
| AJDC | American Jewelry Design Council |
| AJDF | Andrew Jackson Demonstration Farm |
| AJM | American Jewelry Manufacturer |
| AJMC | Adler Jinan Mechanical Company |
| AJOY | Ayujoy Herbals, LTD. |
| AK | Absolutely Kids |
| AK | Adenylate Kinase |