NSIF
| Acronym | Definition |
|---|---|
| NSIF | Network Services and Integration Forum |
| NSIF | Nicholls Spinal Injury Foundation (UK) |
| NSIF | NATO Secondary Imagery Format |
| NSIF | National Spatial Information Framework (geographical information; South Africa) |
| NSIF | National Swine Improvement Federation (est. 1975; Knoxville, Tennessee) |
| NSIF | NATO Special Intelligence Facility |
| NSIF | Network and Service Integration Forum (ATIS) |
| NSIF | National Social Investment Fund (World Bank; Tajikistan) |