- Sherburne County Area United Way
- Sherman Oaks Hospital
- Sherrill House
- Sherwin Electric Co. Inc.
- Sherwood Oaks
- Sherwood Studios
- ShickUSA
- Shields Communications Service, Inc.
- Shiloh Baptist Church
- Shiloh High School
- Shiloh Industries Inc.
- Shippensburg University
- Shirley Wills and Associates
- Shoals Hospital
- Shock Trauma Outpatient Clinic
- ShorePoint Health Port Charlotte
- ShorePoint Health Punta Gorda
- Shoshone County
- Show Works
- Showcase My Ride
- SHPS
- Shreveport Bossier Convention and Tourist Bureau
- Shrewsbury State Bank
- Shriner's Hospital for Children of Southern California
- Shriners Hospital
- Shriners Hospital for Children - Cincinnati
- Shriners Hospitals for Children
- Shure Inc.
- Sibcy Cline
- Sibley Memorial Hospital
- Sickle Cell Disease Association of America Inc.
- Sidney-Shelby County YMCA
- Siebenthaler Company
- Siemens Building Technologies
- Siemens Corp.
- Siena Heights University
- Siena Village Inc.
- Sierra Community College
- Sierra Consultants
- Sierra Donor Services
- Sierra Medical Center
- Sierra Nevada Memorial Hospital
- Sierra Nevada Tissue Bank
- Sierra Suites, Sierra Vista, AZ
- Sierra View Medical Center
- Sierra Vista Regional Medical Center
- Sierrabay Technology Group
- Sigma Gamma Rho Sorority Inc.
- Signature Association Management
- Signature Events