| Acronym | Definition |
|---|
| ATMOS | Atmospheric Trace Molecule Spectroscopy |
| ATMOS | Algorithmic Methods and Models for Optimization of Railways (workshop) |
| ATMOS | Algorithmic Approaches for Transportation Modeling, Optimization, and Systems (Workshop) |
| ATMOS | Annual Techno-Management Festival of Bits Pilani Hyderabad Campus (Hyderabad, India) |
| ATMOS | Air Traffic Management and Operations Simulator |
| ATMOS | Atmospheric Trace Molecules Observed by Spectroscopy |
| ATMOS | Atmospheric Omission System (fictional automobile software; Doctor Who) |
| ATMOS | Asynchronous Transfer Mode Optical Switching (European) |
| ATMOS | Automatic Testing Multiple Operating System |