| Abbreviation | Definition |
|---|---|
| ATIS | Advanced Traveler Information System |
| ATIS | Automatic Terminal Information Service |
| ATIS | The Advanced Transportation Information System |
| ATK | Available Tonne Kilometres |
| ATL | Adjustable Throttle Limiter |
| ATL | Aerospace Transportation And Logistics |
| ATL | Automated Test Lane |
| ATL | William B Hartsfield Atlanta International Airport |
| ATLANTIS | A Three Layer Architecture For Navigating Through Intricate Situations |
| ATLAS | Advanced Traffic and Logistics Algorithms and Systems |
| ATLAS | All Terrain Lifter Articulated System |
| ATM | Air Traffic Management |
| ATM | Automated Token Machine |
| ATMS | Advanced Traffic Management System |
| ATMS | Advanced Traffic Management Systems |
| ATMS | Advanced Transportation Management System |
| ATN | Aeronautical Telecommunications Network |
| ATO | Air Traffic Operations Service |
| ATO | Automatic Take Off |
| ATO | Automatic Train Operation |