CIRO
| Acronym | Definition |
|---|---|
| CIRO | Cabinet Intelligence and Research Office (Japan) |
| CIRO | Certified Industrial Refrigeration Operator |
| CIRO | City of Rocks National Reserve (US National Park Service) |
| CIRO | Certified Investor Relations Officer |
| CIRO | Council of Institutional Research Officers (various schools) |
| CIRO | Consolidated Industrial Relations Office |
| CIRO | Conference for International Relief Organizations (San Diego City College; California) |