- Senior Living Systems, Inc. - Hackettstown, NJ
- Senior Navigator.com
- Senior Services of Alexandria
- Seniority, Inc.
- Seniors Unlimited
- Sentara Albemarle Medical Center
- Sentara Careplex Hospital
- Sentara Halifax Regional Hospital
- Sentara Leigh Memorial Hospital
- Sentara Martha Jefferson Hospital
- Sentara Norfolk General Hospital
- Sentara Northern Virginia Medical Center
- Sentara Obici Hospital
- Sentara Princess Anne Hospital
- Sentara Virginia Beach General Hospital
- Sentara Williamsburg Regional Medical Center
- Sention
- Sequoia Community Health Centers
- Sequoia Voting Systems
- Serenity Funeral Home
- Service Brands International
- Service Corporation International
- Service Litho-Print, Inc.
- Service Trucks International
- Servicios de Sangre Cruz Roja America
- Seton Hill Child Services Inc.
- Seton Hospital
- Seton Keough High School
- Seton Northwest Medical Center
- Seven 11
- Seven Hills Elementary School
- Seventh Day Adventist Church
- Sevier Valley Medical Center
- Seward County United Way
- Shadow Mountain Resort and Club
- Shadygrove Center
- Shamrock Foods
- Shands Health Care
- Shands Hospital at the University of Florida
- Shannon Medical Center
- Sharon Hospital
- Sharon Regional Medical Center
- Sharonville - Fairfield Inn by Marriott, OH
- Sharp Chula Vista Medical Center
- Sharp Coronado Hospital and Healthcare Center
- Sharp Grossmont Hospital
- Sharp Mary Birch Hospital for Women and Newborns
- Sharp Memorial Hospital
- Shasta Community Health Center
- Shasta Regional Medical Center