- Slavek Hanzlik
- Sleep Station
- Sleepercar
- Sleepy Hollow
- Sleepy Johnson
- Sleepy LaBeef
- Sleepy Man Banjo Boys
- Slick 57
- Slick Andrews
- Slick Nickel
- Slim And The Secret Society
- Slim Andrews
- Slim Bryant
- Slim Chance
- Slim Clark
- Slim Dusty
- Slim Harbert
- Slim Harbert & His Boys
- Slim Johnson
- Slim Lay And The Crossroads Follies Gang
- Slim Pickens
- Slim Richey
- Slim Rinehart
- Slim Whitman
- Slim Willet & His Hired Hands
- Slim Willett
- Slim Willett & The Brush Cutters
- Slim Williams and His Tennessee Avenue Boys
- Slim Williams and the Sons of the Road
- Slim Wilson
- Sloan Matthews
- Slobberbone
- Slofunkpump
- Sly Dog
- Small Sips
- Small Town Southern
- Small & Whitter Hendley
- Smiley Burnette
- Smiley Hobbs
- Smiley Hobbs
- Smiley Maxedon
- Smiley Red
- Smiley Whitley
- Smiling Jerry Jericho
- Smith & Allgood
- Smith and Jones
- Smith and Walden