NFSI
| Acronym | Definition |
|---|---|
| NFSI | National Floor Safety Institute (Southlake, TX) |
| NFSI | Non invasive Functional Source Imaging (International Symposium) |
| NFSI | National Forensic Science Institute (University of Tennessee) |
| NFSI | Near and Far Sciences for Illinois |
| NFSI | N-Fluorobenzenesulfonamide |
| NFSI | Namibian Farmers' Support Initiative |