SIRIS
| Acronym | Definition |
|---|---|
| SIRIS | Smithsonian Institution Research Information System |
| SIRIS | Sputter-Initiated Resonance Ionization Spectroscopy |
| SIRIS | Southern Iowa Regional Internet Services (internet provider) |
| SIRIS | Southern Illinois Radio Information Service |
| SIRIS | Special Investigation Resource and Intelligence System (LexisNexis) |
| SIRIS | Secure Inter-domain Routing and Information System |