| Acronym | Definition |
|---|
| FRSI➣Fundacja Rozwoju Spoleczenstwa Informacyjnego (Polish: Information Society Development Foundation) |
| FRSI➣Felt Reusable Surface Insulation (aerospace engineering) |
| FRSI➣Flexible Reusable Surface Insulation |
| FRSI➣Family Resources and Support Institute (California) |
| FRSI➣Forensic Reconstruction Specialists Inc. |
| FRSI➣Farm-Related Service Industries |