NMSI
| Acronym | Definition |
|---|---|
| NMSI | National Mobile Station Identification |
| NMSI | National Museum of Science and Industry (London, UK) |
| NMSI | New Mission Systems International (Fort Myers, FL) |
| NMSI | National Mobile Station Identity |
| NMSI | Northern Merchant Services, Inc. (also seen as NMS; Brasher Falls, NY) |
| NMSI | Nebraska Math and Science Initiative (education) |
| NMSI | Neighborhood Main Street Initiative (various locations) |