| 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 |