| Acronym | Definition |
|---|
| NSDI | Networked Systems Design and Implementation (symposium) |
| NSDI | National Spatial Data Infrastructure (US) |
| NSDI | National Spatial Data Infrastructure |
| NSDI | National Self-Defense Institute (Miami Beach, Florida) |
| NSDI | National Strategy for Development and Integration (Albania) |
| NSDI | North Star Digital Imaging |
| NSDI | Nigerian Software Development Initiative |
| NSDI | Normalized Snow Difference Index |
| NSDI | National Sleep Dynamics, Inc. |
| NSDI | New Style Discovery International Co., Ltd (Japan) |
| NSDI | Northstate Drywall, Inc. (Garner, NC) |