| SIRT | Sagar Institute of Research & Technology 
| Others |
| SIRT | Security Incident Response Team
| Others |
| SIRT | Selective Internal Radiation Therapy
| Others |
| SIRT | Self-Imposed Red Tape
| Others |
| SIRT | Serious Incident Response Team
| Others |
| SIRT | Serious Injury Response Team
| Others |
| SIRT | Service Issues Resolution Team
| Others |
| SIRT | Shot Indicating and Resetting Trigger
| Others |
| SIRT | Shot Indicating Reset Trigger
| Others |
| SIRT | Shot Indicating Resetting Trigger
| Others |
| SIRT | Simultaneous Iterative Reconstruction Technique
| Others |
| SIRT | Special Incident Response Team
| Others |
| SIRT | Staten Island Rapid Transit
| Others |
| SIRT | Sustainability Institute for Regional Transformations
| Others |
| SIRT | System for Information Reference and Traceability
| Others |