| Acronym | Definition |
|---|
| ATOS➣American Theatre Organ Society |
| ATOS➣Air Transportation Oversight System |
| ATOS➣Atari Operating System |
| ATOS➣Autonomous Decentralized Transport Operation Control System (Japan) |
| ATOS➣Australian Treatment Outcome Study (National Drug & Alcohol Research Center) |
| ATOS➣Assessment at Time of Sale |
| ATOS➣Advanced Topometric Sensor |
| ATOS➣Automated Technical Order System |
| ATOS➣Advanced Technology Ordnance Surveillance |
| ATOS➣Advantage/TASA Open Standard (reading management software offered jointly by Advantage Learning Systems and Touchstone Applied Science Associates) |
| ATOS➣Air Traffic Operations Service |
| ATOS➣Automated Travel Order System |
| ATOS➣Aircraft Tape Operating system |
| ATOS➣ASWOC Tape Operation System |
| ATOS➣Administratif, Technicien, Ouvrier et de Service (French: Administrative Staff, Technicians, and Service Workers) |
| ATOS➣Assisted Takeoff System |