| Abbreviation | Definition |
|---|---|
| SE | Sarah Elizabeth |
| SE | Susan Eloise |
| SE | Svend Erik |
| SEY | Seymour |
| SFR | Slow Fluid Rate |
| SG | Sherwin Gilligan |
| SG | Soundgarden |
| SHABOLA | Big Baller |
| SHG | Silver Haired Guy |
| SHK | Sultan H. Khane |
| SID | Isidore |
| SID | Sidney |
| SIL | Son In Law |
| SIW | Syed Ifthekhar Wali |
| SJ | Sara Jane |
| SJ | Sarah Jack |
| SJ | Sarah Josephine |
| SJ | Sean James |
| SJ | Simon Joe |
| SJ | Sofia Jane |