| Abbreviation | Definition |
|---|---|
| SEPB | Swiss Electronic Phone Book |
| SEPD | Southern Electric Power Distribution |
| SEPG | Software Engineering Process Group |
| SEPIC | Single Ended Primary Inductor Converter |
| SEPN | Squad Electric Power Network |
| SEPP | Secure Electronic Payment Process |
| SEPP | Secure Electronic Payment Protocol |
| SEPS | Shortstop Electronic Protection System |
| SEPS | Southern Electrical Power System |
| SEQDB | Semiconductor EQuipment DataBase |
| SER | Selve Electronic Roller |
| SER | Standard Electric Radio |
| SER | Surface Equivalente Radar (Radar Cross Section) |
| SERA | Sequential Electrochemical Reduction Analysis |
| SERAS | Services Electronic Reporting Access System |
| SERC | Southeast Electric Reliability Council |
| SERDES | SERrialization/DE-Serialization |
| SERI | State Electronic Records Initiative |
| SERI | Sustainable Electronics Recycling International |
| SERS | Searchable Electronic Rulemaking System |