- The Rovers -- The Roys
- The Rubberneckers -- The Saddle Tramps
- The Sadies -- The Scavengers
- The Schmoozers -- The Settlers
- The Shacklefords -- The Shiftless Rounders
- The Shiloh River Band -- The Sid Hillman Quartet
- The Sidehill Gougers -- The Slim Dusty Family
- The Smackers -- The Snakehandlers
- The Snakes -- The South Carolina Broadcasters
- The Souther, Hillman, Furay Band -- The Spillit Quikkers
- The Splinters -- The Stanley Brothers
- The Stanley Brothers & The Clinch Mountain Boys -- The Steel Wheels
- The Stellas -- The Stone Hill All-Stars
- The Stoneman Family -- The Student Loan
- The Stumbleweeds -- The Sundowns
- The Sunny Cowgirls -- The Swains
- The Swanson Family -- The Ten Foot Polecats
- The Tennessee Cutups -- the texas plainsmen
- The Texas Sapphires -- The Three Shif'less Skonks
- The Thrills -- The Travelin Black Hillbillys
- The Travelling Mabels -- The Truckstop Preachers
- The True Brother -- The Twang
- The Twang Bangers -- The Twin City Playboys