- Shway Shwayans -- Sick of Change
- Sick of It All -- Sidney Easton
- Sidney Eden -- Signfield
- Signia -- Silica Gel
- Silicon -- Silvera
- Silvera & Blenn -- Simon
- Simon -- Simon Russell Beale
- Simon Ryu -- Simply Three
- Simply Tony -- Singers of the Airborne Brigade
- Singers & Players/Bim Sherman -- Sir Charles and His All Stars
- Sir Charles Groves -- Sirius Coyote
- Sirius Isness -- Sisters of Vision
- Sisters of Your Sunshine Vapor -- Sistrum: Lansing Women's Chorus