| Abbreviation | Definition |
|---|---|
| SEDL | Spray Engineering Devices Ltd |
| SEEC | Shihlin Electric and Engineering Corporation |
| SEECO | Southern Electrical Equipment Company |
| SEEG | Samsung Electronics Egypt |
| SEEL | Samaya Electronics Egypt Ltd. |
| SEF | Small Enterprise Foundation |
| SEGA | SErvice GAmes |
| SEGA | Specialized Electronics and Graphic Arts |
| SEGC | Securities Exchanges Guarantee Corporation |
| SEGI | Sterling Enterprises Group Inc |
| SEGI | Sycamore Entertainment Group Inc |
| SEGI | Sycamore Entertainment Group Inc. |
| SEI | Security Engineers Inc |
| SEI | Security Equipment Inc |
| SEI | Self Enhancement Inc |
| SEI | Service Express Inc |
| SEI | Smithgall Enterprises Inc |
| SEI | SpaceWorks Enterprises Inc |
| SEI | Sports Entertainment Incorporated |
| SEI | Strategic Education Inc |