| IATS | ICAO Air Transport Symposium 
| Others |
| IATS | Infant Aphakia Treatment Study
| Others |
| IATS | Information Access And Technology Services
| Others |
| IATS | Information Administrative Technology Services
| Others |
| IATS | Information and Administrative Technology Services
| Others |
| IATS | Institute of Air Travel Studies
| Others |
| IATS | Instituto de Acuicultura Torre de la Sal
| Others |
| IATS | Insured Aircraft Title Service
| Others |
| IATS | Intake Air Temperature Sensor
| Others |
| IATS | Integrated Automated Travel System
| Others |
| IATS | Intelligent Automotive Technology Summit
| Others |
| IATS | International Alliance of Teacher Scholars
| Others |
| IATS | International Association for Tibetan Studies
| Others |
| IATS | International Association of Tibetan Studies
| Others |
| IATS | International Automated Ticket Systems
| Others |
| IATS | International Automated Transaction Services
| Others |
| IATS | International Aviation Training Show
| Others |
| IATS | Inverness Access Training Services
| Others |
| IATS | Iowa Athletic Trainers Society
| Others |
| IATS | Iowa Athletic Trainers' Society
| Others |