| Acronym | Definition |
|---|
| STIR | Short Term Interest Rate |
| STIR | Short T1 Inversion Recovery (magnetic resonance testing) |
| STIR | Separate Track and Illuminating Radar |
| STIR | Supplemental Type Inspection Report |
| STIR | Special Technical Inspection and Repair |
| STIR | Separate Track & Illumination Radar |
| STIR | Surveillance Target Indicator Radar |
| STIR | Security and Telecommunications Infrastructure Release (formerly Subrelease 2.1) |
| STIR | Scientific & Technical Intelligence Review |
| STIR | Singles Together in Raleigh (Raleigh, NC) |
| STIR | Surveillance & Target Indication Radar (British) |
| STIR | Site Total Indicator Reading |