| Abbreviation | Definition |
|---|---|
| SEMS | Short E-mail Message Service |
| SEMS | SIP Express Media Server |
| SENT | Student Evangelization Networking Teams |
| SEP | Scalable Encryption Processor |
| SERA | Secure Enterprise Remote Access |
| SER-DES | Serializer/ De-serializer |
| SER-DES | SERializer/DE-Serializer |
| SET | Secure Electronic Transactions |
| SETI | Search For Extra Terrestial Intelligence |
| SEU | Significant Energy Usage |
| SFC | Synchronous Fully Connected |
| SFD | Start Frame Delimiter |
| SFFN | San Francisco Freecycle Network |
| SFG | Silly Facial Grin |
| SFI | Struck Fastbus Interface |
| SFIS | Super Fast Internet Services |
| SFN | Semper Fidelis Networking |
| SFN | Single Frequency Network |
| SFNG | School Facilitators Networking Group |
| SFP | Shared Folder Permissions |