- Sauder Manufacturing Company
- SCCI Hospital, Lima
- School Employees Lorain County Credit Union
- Seasongood and Mayer, LLC
- Selby General Hospital
- Sharonville - Fairfield Inn by Marriott, OH
- Shawnee State University
- Shelby County United Way
- Shell + Meyer Associates, Inc.
- Shiloh Industries Inc.
- Shriners Hospital for Children - Cincinnati
- Sibcy Cline
- Sidney-Shelby County YMCA
- Siebenthaler Company
- Sinclair Community College-Phi Theta Kappa
- Southeastern Ohio Regional Medical Center
- Southern Ohio Medical Center
- Southview Medical Center
- Spectrum Paralegal
- Speedway SuperAmerica
- Springfield Regional Medical Center
- St. Elizabeth Boardman Hospital
- St. Elizabeth Health Center
- St. Elizabeth Youngstown Hospital
- St. Francis Health Centre
- St. Joseph Health Center
- St. Joseph Warren Hospital
- St. Luke Lutheran Community
- St. Luke's Hospital
- St. Paris Public Library
- St. Paul Village
- St. Vincent Charity Medical Center
- Staffmark
- Standard Register - Dayton, OH
- Standard Register - Richmond, VA
- Stop Tech
- Summa Akron City Hospital
- Summa Health System
- Summit County Council
- Summit County, Ohio
- Sumner on Merriman
- Sycamore Medical Center
- Tax and Business Services
- Teamsters, Local 293
- Ten United
- The Bellevue Hospital
- The Christ Hospital Health Network
- The Eliza Jennings Group
- The Eliza Jennings Home
- The Illuminating Co.