ISOS
| Acronym | Definition |
|---|---|
| ISOS | IP (Internet Protocol) Service Operating System |
| ISOS | In Search of Sunrise (Dj Tiesto song) |
| ISOS | Illinois Secretary of State |
| ISOS | Iowa Secretary of State (Des Moines, IA) |
| ISOS | Isosceles |
| ISOS | Intelligence Service Oliver Strachey (UK) |
| ISOS | In Search Of Space |
| ISOS | Inspection Service Operation Support (US Postal Service) |
| ISOS | Intercall Switch Operating System |
| ISOS | Institute for State Organisational Sciences (Vietnam) |
| ISOS | Invitation to Submit Outline Solution (UK) |