| Rank | Abbreviation | Meaning |
|---|
| ***** | CIRI | Cleaning Industry Research Institute
| |
| ***** | CIRI | Computer Incident Response and Investigation
| |
| ***** | CIRI | Centre Interuniversitaire de Ressources Informatiques
| |
| **** | CIRI | CEPBA-IBM (European Center for Parallelism of Barcelona-International Business Machines Corporation) Research Institute
| |
| **** | CIRI | Comité Interministériel de Restructuration Industrielle
| |
| *** | CIRI | Council for the Islamic Resistance in Iraq
| |
| *** | CIRI | Canadian Investor Relations Institute
| |
| ** | CIRI | Cerca Il Rap Italiano
| |
| ** | CIRI | Content Informal Reading Inventory
| |
| ** | CIRI | Canadian Industrial Risk Insurers
| |
| ** | CIRI | Centrum Informatie Research Insolventies
| |
| ** | CIRI | Cook Inlet Region, Incorporated
| |
| * | CIRI | Cambridge Investment Research Inc
| |
| * | CIRI | Central Iron Range Initiative
| |
| * | CIRI | Cleveland Industrial Retention Initiative
| |
| * | CIRI | Completely Integrated Reference Instrumentation
| |
| * | CIRI | Critical Infrastructure Response Initiative
| |
| * | CIRI | Conference on Industrial Risk
| |
| * | CIRI | Cryogenic Infrared Radiance Instrumentation
| |
| * | CIRI | CIRO, INC.
| |