- Spring Hills
- Springdale Health and Rehabilitation
- Springpoint Senior Living
- SR Construction
- SRS Real Estate Partners
- SRX
- SRZ Management
- St. Andrew's Resources for Seniors System
- St. Catherine’s University
- St. Elizabeth Community
- St. John’s
- St. John’s by the Lake
- St. John’s Communities
- St. John’s Medical Center
- St. Louis Public Radio
- St. Luke’s
- St. Mary Mercy Livonia
- St. Peter’s Health Partners
- St. Vincent’s Home
- Stackpole & Associates