| Acronym | Definition |
|---|
| CIRS | Community Information and Referral Service (Arizona) |
| CIRS | Centre International de Recherche Scientifique (French: International Center for Scientific Research) |
| CIRS | Composite Infrared Spectrometer |
| CIRS | Circles (street type) |
| CIRS | Currency Interest Rate Swap |
| CIRS | Contractor Inventory Redistribution System |
| CIRS | Certified Impairment Rating Specialist (medical cost containment) |
| CIRS | Critical Incidents Reporting System |
| CIRS | Customer Infrastructure Readiness Survey |
| CIRS | Combat Information Retrieval Service |
| CIRS | Center for International Research and Studies (University of New Mexico) |
| CIRS | Common Incident Reporting System |