- Sound Stop Music Presents -- South 85
- South Austin Jug Band -- South85
- Southern Boulevard -- Southern Knights of Tennessee
- Southern Melody Boys -- Southern Rockets
- Southern Skye -- Spade Cooley
- Spade Cooley & His Orchestra -- Spartacus Jones
- Spazz Sparkman -- Special Ed
- Special Ed and The Shortbus -- Speedy Tolliver
- Speedy West -- Spinney Brothers
- Spitfire Tumbleweeds -- Spoke Little & Brothers
- Spongefinger -- Spring Creek Bluegrass Band
- Springer! -- Stacey Baltes
- Stacey Earle -- Stacy Dean Campbell
- Stacy Donahue -- Stagger Lee
- Stagger Lee -- Stan Cox
- Stan Davey -- Stan Silver
- Stan Swiniarski -- Stanley Alpine