ATSO
| Acronym | Definition |
|---|---|
| ATSO | Antalya Ticaret ve Sanayi Odasi (Turkish: Antalya Chamber of Commerce; Antalya, Turkey) |
| ATSO | Australian Technical Standard Order (Civilian Aviation Safety Authority; Australia) |
| ATSO | Air Traffic Service Organization (ICAO) |
| ATSO | Ability To Survive & Operate |
| ATSO | Association of Tattoo Studio Owners |
| ATSO | Advanced Technology and Software Operations Office |
| ATSO | Anatolia Turkish Student Organization (Michigan State University; East Lansing, MI) |