| 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) |