| SIRC | Science in the River City 
| Others |
| SIRC | Seafarers International Research Centre
| Others |
| SIRC | Secure Irc
| Others |
| SIRC | Security Intelligence Review Committee
| Others |
| SIRC | Shipboard Intermediate Range Combat
| Others |
| SIRC | Side Intrusion and Roof Crush
| Others |
| SIRC | Simple Interface for Reconfigurable Computing
| Others |
| SIRC | Simulation Innovation Resource Center
| Others |
| SIRC | Social Issues Research Centre
| Others |
| SIRC | Society for Implementation Research Collaboration
| Others |
| SIRC | Software Information Resource Corp
| Others |
| SIRC | Sony Infrared Remote Control
| Others |
| SIRC | South Independent Rugby Conference
| Others |
| SIRC | Southern India Regional Council
| Others |
| SIRC | Southwest Interdisciplinary Research Center
| Others |
| SIRC | Spinal Injury Rehabilitation Center
| Others |
| SIRC | Spokane Intercollegiate Research Conference
| Others |
| SIRC | Sport Information Resource Centre
| Others |
| SIRC | Strategic Infrastructure for Research Committee
| Others |
| SIRC | Student and Industry Resource Center
| Others |
| SIRC | Styrene Information and Research Center
| Others |
| SIRC | Styrene Information Research Center
| Others |
| SIRC | Sun International Racing
| Others |
| SIRC | Suzuka International Racing Course
| Others |
| SIRC | Sydney International Regatta Centre
| Others |