CFNS
| Acronym | Definition |
|---|---|
| CFNS | Calgary Field Naturalists' Society (Calgary, Alberta, Canada) |
| CFNS | Craniofrontonasal Syndrome |
| CFNS | Centre for New Students (Canada) |
| CFNS | Corporation for National and Community Service (est. 1993) |
| CFNS | Centre de Formation Nautique Soustons (French: Soustons Nautical Training Center; Soustons, France) |