VMSI
| Acronym | Definition |
|---|---|
| VMSI | Ventana Medical Systems, Inc. (medical equipment company; various locations) |
| VMSI | Varian Medical Systems, Inc. (medical equipment manufacturer) |
| VMSI | Variable Message Signs (roadwork) |
| VMSI | Van Martin Systems, Inc. (Rockville, MD) |
| VMSI | Vegetation Management Specialist, Inc. (lawn care company; Louisiana) |