| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Sebastian Cotting | 0 | |
| Seneida Biendarra | 0 | References |
| Shion Omata | 0 | |
| Sid Perou | 0 | |
| Sienna Kopf | 0 | |
| Silvia Loreggian | 0 | |
| Silvio Reffo | 0 | |
| Simon Carter | 0 | |
| Simon Dale | 0 | |
| Simone Moro | 0 | |
| Simon Favrot | 0 | |
| Simon Panton | 0 | Author of many climbing guidebooks to North Wales, most notably the North Wales Bouldering series. Simon is also a prolific first ascenionist and has established many new problems and areas in North Wales. References |
| Simon Tucker | 0 | |
| Simon Weill | 0 | |
| Sofya Yokoyama | 0 | |
| Sol Wertkin | 0 | |
| Sorato Anraku | 0 | |
| Stacy Simms | 0 | |
| Stefan Bednar | 0 | |
| Stefanie Myr | 0 |