| Abbreviation | Definition |
|---|---|
| SFN | Something For Nothing |
| SFPT | South Florida Public Television |
| SFQ | Summitt Family Quarterly |
| SFR | Sender Freies Berlin |
| SFS | Sequence Feature Series |
| SFS | Shocking Family Secrets |
| SFT | Store And Forward Telegraph |
| SFW | Science Fiction Weekly |
| SFW | Südwestfunk |
| SFX | Sound Effects |
| SFX | Special Effects |
| SFY | Searching For Y |
| SG | Star Gate |
| SGC | Salem Government Channel |
| SGN | So Graham Norton |
| SGSN | South Georgia Sports Network |
| SGU | StarGate Universe |
| SH | Spartanburg Herald |
| SHAPE | Secret Harbour Association of Performers and Entertainers |
| SHARE | Supplying Handicapped Adults Recreational Entertainment |