ROSI
| 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 |