OPSI
| Acronym | Definition |
|---|---|
| OPSI | Office of Public Sector Information (UK) |
| OPSI | Operations Strategies for Industry |
| OPSI | Overwhelming Post-Splenectomy Infection |
| OPSI | Ohio Patient Safety Institute (Ohio Health Council) |
| OPSI | Open PC Server Integration |
| OPSI | Occidental Power Services Inc. (Houston, TX) |
| OPSI | Office of Personnel Systems Integrity (US DHHS) |