SIRR
| Acronym | Definition |
|---|---|
| SIRR | Station Island Railroad |
| SIRR | Society of Internet Rugby Referees (website) |
| SIRR | Software Integration Readiness Review |
| SIRR | Stepped-Impedance Ring Resonator |
| SIRR | Software Improvement Recommendation Report |
| SIRR | Software Installation Results Record |
| SIRR | Special Initiative for Residential-Led Regeneration (UK) |