| CIRT | Cardiovascular Inflammation Reduction Trial 
| Others |
| CIRT | Center for Instruction and Research Technology
| Others |
| CIRT | Center for Instruction Research Technology
| Others |
| CIRT | Central Illinois Riding Therapy
| Others |
| CIRT | Central Institute of Road Transport
| Others |
| CIRT | Children's Intensive Response Team
| Others |
| CIRT | Computer Incident Response Team
| Others |
| CIRT | Computer Incidents and Response Team
| Others |
| CIRT | Computing Incident Response Team
| Others |
| CIRT | Construction Industry Round Table
| Others |
| CIRT | Controlled Impact Rescue Tool
| Others |
| CIRT | Court Intervention Response Team
| Others |
| CIRT | CoVID-19 Immunization Response Team
| Others |
| CIRT | Cranberry Isles Realty Trust
| Others |
| CIRT | Crisis Intervention Response Team
| Others |
| CIRT | Critical Incident Response Team
| Others |
| CIRT | Crowe Information Request Tracker
| Others |
| CIRT | Cyber Incident Response Team
| Others |