UFOS
| Acronym | Definition |
|---|---|
| UFOS | United Flyers of Sonoma (California) |
| UFOS | Ultraviolet Forecasting Operational Service (EU) |
| UFOS | Universal Freight Operating Systems, Inc. (est. 1998; Mississauga, Ontario, Canada) |
| UFOS | Ultimate Frisbee of Saigon (Saigon, Vietnam) |