- Secan Industries Inc
- Sechrist Construction Inc
- Seedway
- Seidle Hospital Pinnaclehealth
- Select Capital Corp
- Select Medical Corp
- Select Medical Corp
- Sellstuff
- Senior Planning Svc
- Service First Restoration
- Service Oil Co
- Service One Office Care
- Shamrock Alternative Play Care
- Shared Services Consortium
- Shay's Home Improvements
- Sheetz
- Sheetz
- Shenandoah Apartments-Twnhs
- Shepherdstown Elementary Sch
- Shepherdstown Family Practice
- Shepherdstown United Methodist
- Shepps Shop
- Sheriff's Auto Sales
- Sherry's Cleaning Svc
