| Acronym | Definition |
|---|
| ROSI➣Romanian Open Source and Free Software Initiative |
| ROSI➣Return on Security Investment |
| ROSI➣Repository of Student Information |
| ROSI➣Rollergirls of Southern Indiana (Evansville, IN) |
| ROSI➣Return on Spending Index (finance) |
| ROSI➣Recovery-Oriented System Indicator (mental health treatment) |
| ROSI➣Rational Octahedron Selection Intelligence (gemology) |
| ROSI➣Raytheon Optical Systems Incorporated |