| Acronym | Definition |
|---|
| SFN | Society For Neuroscience |
| SFN | Sistema Financeiro Nacional (Portuguese: National Financial System; Brazil) |
| SFN | Single Frequency Network |
| SFN | Site File Name |
| SFN | Services for Netware |
| SFN | Short File Name |
| SFN | Soccer Fans Network (website) |
| SFN | Short File Name (eight legal characters and a period) |
| SFN | Stratifin |
| SFN | Société Française de Nutrition (French: French Society of Nutrition; human and animal nutrition research; Paris, France) |
| SFN | Société Française de Neurologie (French: French Society of Neurology) |
| SFN | Stern Fan Network |
| SFN | Server Fruehe Neuzeit (German: Server Early Modern Times) |
| SFN | Santa Fe, Santa Fe, Argentina (Airport Code) |
| SFN | Securian Financial Network (Securian Financial Group; St. Paul, MN) |
| SFN | Something from Nothing |
| SFN | System Frame Number (3GPP) |
| SFN | Switch Fabric Network |
| SFN | Scale-Free Network |
| SFN | Société Française de Numismatique (French: French Society of Numismatics; est. 1865) |
| SFN | Southern Forests Network |
| SFN | Star Formation Newsletter (monthly) |
| SFN | Société Française de Néonatologie (French: French Society of Neonatology; Paris, France) |
| SFN | Ship & Facilities, Navy |
| SFN | State Form Number (North Dakota) |