MWSI
| Acronym | Definition |
|---|---|
| MWSI | Mercury Waste Solutions, Inc. (Union Grove, WI) |
| MWSI | Mobile Whole Slide Imaging (converting glass slides into digital images) |
| MWSI | Multicultural Workforce Strategic Initiative (USDA) |
| MWSI | Morgan Wilshire Securities, Inc. (est. 1998) |
| MWSI | Minnesota-Wisconsin Stability Interface (utilities) |
| MWSI | Metal Worx Systems, Inc. (Plain City, OH) |
| MWSI | Maynilad Water Services, Incorporated (Philippines) |