| IRRC | Idaho Rangeland Resource Commission 
| Others |
| IRRC | Idaho Rangeland Resources Commission
| Others |
| IRRC | Illinois Research and Retrieval Center
| Others |
| IRRC | Immigrant and Refugee Resource Collaborative
| Others |
| IRRC | Immune Related Response Criteria
| Others |
| IRRC | Inclusive Recreation Resource Center
| Others |
| IRRC | Independent Regulatory Review Commission
| Others |
| IRRC | Independent Regulatory Review Committee
| Others |
| IRRC | Independent Running Retailers of Canada
| Others |
| IRRC | India Rapid Reaction Cell
| Others |
| IRRC | Indiana Road Runners Club
| Others |
| IRRC | Industrial Relations Research Centre
| Others |
| IRRC | Infra Red Reflective Coating
| Others |
| IRRC | Interdisciplinary Research Regional Conference
| Others |
| IRRC | International Review of the Red Cross
| Others |
| IRRC | International Road Racing Championship
| Others |
| IRRC | Investor Responsibility
| Others |
| IRRC | Investor Responsibility Research Center
| Others |
| IRRC | Iowa Railroad
| Others |
| IRRC | Iowa Railroad Company
| Others |
| IRRC | Iowa Reading Research Center
| Others |
| IRRC | Irrigated Rice Research Consortium
| Others |