- Schumaker Lighting, Inc.
- Schuyler Hospital
- Schuylkill Medical Center
- Schuylkill Medical Center South
- Schuylkill United Way
- Schwans Bakery, Inc.
- Schwarzschild Jewelers
- Schwenckfeld Manor Apartments
- Science and Engineering Associates
- Science Care
- Scientific Applications and Research Associates, Inc.
- Scientific Applications and Research Associates, Inc. - Colorado Office
- Scientific Equipment and Furniture Association
- Scientific Testing Laboratories, Inc.
- Scion Cardio-Vascular
- Scios, Inc.
- SCODE
- Scotland Memorial Hospital
- Scott A. Leckman MD, Office of
- Scott and Stringfellow Inc.
- Scott Insurance
- Scott Regional Hospital
- Scottish Rite Center
- Scotts Auto Express
- Scottsdale Convention and Visitors Bureau
- Scottsdale Healthcare Thompson Peak Hospital
- Scottsdale Healthcare-Osborn
- Scottsdale Insurance
- Scottts Bluff Dialysis Center
- Screven County Hospital
- Scripps Green Hospital
- Scripps Green Hospital Center For Organ and Cell Transplantation
- Scripps Health
- Scripps Memorial Hospital Encinitas
- Scripps Memorial Hospital La Jolla
- Scripps Mercy Hospital
- Scripps Mercy Hospital Chula Vista
- Scriptsave
- SDX Logistics
- Sea Crest Oceanfront Resort and Conference Center
- Sea Ranch Lodge, CA
- Sea Services
- Sea Turtle Inn, Jacksonville
- Seabrook Wallcoverings
- Sealeze A Unit of Jason Inc.
- Search to Involve Pilipino Americans
- Search Wide
- Sears Contract Sales
- Sears Holdings Co.
- Sears Logistics Services