OMSI
| Acronym | Definition |
|---|---|
| OMSI | Oregon Museum of Science and Industry |
| OMSI | Open Mobile Service Interface |
| OMSI | Operation and Maintenance Support Information |
| OMSI | Office of Monitoring and School Improvement |
| OMSI | Open, Modular, Scalable, Integrated |
| OMSI | Oregon Materials Science Institute (est. 1985) |
| OMSI | Optimum Mortgage Services Inc. (Eagen, MN) |