- Saddle River Stringband
- Safire Sun
- Safire Sun Bluegrass
- Saint Anyway
- Sally Berry
- Sally in The Moon
- Sam Bush
- Sam Rizzetta
- San Ha
- Santa Cruz
- Sapling Grove
- Sara Watkins
- Sarah Harmer
- Sarah Jarosz
- Sauceman Brothers
- ScatterGrass
- Scott Cooper
- Scott Nygaard
- Scott Vestal
- Scotty Anderson
- Scotty Stoneman
- Scrambled
- Sea Gypsy 101
- Sean Watkins
- Seth Di Marco
- Seth Mulder & Midnight Run
- Shaan Ramaprasad
- Shane Shoemaker
- Sharyn Lee
- Sharynlee
- Shaun O'Dowd
- Shawn Camp
- Shawn Lane
- Shirley Jones
- Sideline
- Sierra Hull
- Simone Giuffrida
- Sir King Joe
- Sir King Joe
- Sister Sadie
- Six String Yada
- Six Strings To Life
- Skaggs Family
- Skip Gorman
- Skyline
- Slavek Hanzlik
- Sleepy Man Banjo Boys
- Slidawg & The Redneck Ramblers
- Small Town Therapy
- Smokey Joe Miller
- Smoky Mountain Band
- Snuffy Jenkins
- Snyder Family Band
- Solid Senders
- Sons and Brothers
- Southern Rail
- Southern Show Boys
- Southern Tenant Folk Union
- Soutul Aminin
- Spare Line
- Special Consensus
- Spencer Branch
- Spinning Jennies
- Spirit Family Reunion
- Split Lip Rayfield
- Spring Creek
- St. Joe Jack
- Stacy Grubb
- Steep Canyon Rangers
- Stef Paquette
- Stephen Mougin
- Steve Cauthen
- Steve Dunfee
- Steve Earle
- Steve Gulley
- Steve Gulley & New Pinnacle
- Steve Gulley & Tim Stafford
- Steve Ivey
- Steve Kaufman With Robin Kessinger
- Steve Louvat
- Steve Martin
- Steve Martin and the Steep Canyon Rangers
- Steve Riley & The Mamou Playboys
- Steve Sparkman
- Steve Thomas & The Time Machine
- Steve Whetton
- Steve ‘n’ Seagulls
- Steven Arvid Anderson
- Stevie Barr with Friends
- Stones Crossing
- Stones River Ranch Boys
- Stoney Cooper
- Stoney Creek
- Stoney Lonesome
- Strange Creek Singers
- Strengeplukk
- Strengeplukk & Felegnukk
- Strength In Numbers
- Stringbean
- Stripped Down Sounds
- Stuart Duncan
- Stuart Wyrick
- Sturgill Simpson
- Summer & Bray
- Summer Brooke
- Summer Brooke & Mountain Faith
- Summer Wages
- Summertown
- Summertown Road
- Sundogs
- Sunny Bottom Boys
- Sunnyside Up