| Abbreviation | Definition |
|---|---|
| SO | Solitron |
| SPPC | Special Product and Process Characteristics |
| SQ | Semtech |
| SR | Stalmetrics |
| SS | Shallcross |
| SSGCL | Sui Southern Gas Company Limited |
| SSHEX | Saturdays, Sundays, Holidays Excluded |
| SU | Sage |
| SUPL | Supply |
| SV | Spectrol |
| SW | Stewart Warner |
| SWPM | Solid Wood Packaging Materials |
| SY | Sylvania East |
| SY | Sylvania West |
| SZ | SEG Electronics |
| T1 | Tier 1 |
| T2 | Tier 2 |
| T3 | Tier 3 |
| T4 | Tier 4 |
| TC | Techno- Components |