| Abbreviation | Definition |
|---|---|
| SS | Stocking Stitch |
| SS | Stuffed Shirt |
| SS | Super Sexy |
| SS | Super Size |
| SS | Super Stout |
| SSB | Single Strand Boxer |
| SSE | Solid Sponge EVA |
| SSK | Slip Slip Knit |
| SSS | Self-Sacrificing Style |
| SST | Smith Semeraro Textiles |
| SST | Super Silky Tactel |
| ST | STyle |
| STA | Star Teenage Apparel |
| STF. | Stuff |
| STKW | Storekeeper (White) Arm Patch |
| SUL | Super Ultra Lightweight |
| SWAPS | Special Watchamacallits Affectionately Pinned Somewhere |
| SWAT | Safety Wear Apparel T-shirt |
| SWFI | Smith & Wesson Firefighter Issue |
| SXL | Super Xtra Large |