- A. L. Wood & The Smokey Ridge Boys
- A.L. Wood
- Aaron Burdett
- Aaron Ramsey
- Abben
- Abigail Noles
- Abigail Washburn
- Acoustic Syndicate
- Adam "Swanee" Swann
- Adam "Swannee" Swann
- Adam Greer
- Adam Rogers
- Adam Steffey
- Aesculap Company
- Aireene Espiritu
- Alan Bibey
- Alan Bibey & Grasstowne
- Alan Jackson
- Alan Laney
- Alan Lomax
- Alan Munde
- Alan Munde & Country Gazette
- Alan Munde & Joe Carr
- Albert Lee
- Alecia Nugent
- Alex DePue
- Alex Wolfe
- Alice Gerrard
- Alison Brown
- Alison Brown Quartet
- Alison Krauss
- Alison Krauss & Union Station
- All 4 Hym
- Allen Shelton
- Allerton & Alton
- Alligator Alley
- Alma Diablo
- Aly Bain
- Amado Dias
- Amanda Anne Platt & The Honeycutters
- Amanda Cook
- Amanda Shaw
- American Drive
- American Lullaby
- Ampersand Stringband
- Amy Kelly
- Andrea Zonn
- Andrew Crawford
- Andrew Marlin
- Andrew Thiriot
- Andy Falco
- Andy Garrett
- Andy Hall
- Andy Leftwich
- Andy Lowe
- Andy Statman
- Andy Statman Quartet
- Andy Thorn
- Andy Wood
- Annie McGlade
- Annie Moses Band
- Anthony Romero
- Any Old Time String Band
- Anya Hinkle
- Aoife O'Donovan
- Appalachian
- Appalachian Bluegrass Fiddle Trio
- Appalachian Express
- Appalachian Mountain Bluegrass - 30 Vintage Classics
- Appalatin
- April Verch
- Ariel Guerra
- Arkansauce
- Armada
- Arran lupini
- Arrowhead
- Art Rosenbaum
- Art Stamper
- Arthur Smith
- Ash & W
- Ashlee Blankenship
- Astroturf Noise
- Atlanta-Emory Orchestra
- Aubrey Eisenman & The Clydes
- Aubrey Haynie
- Audie Blaylock
- Audie Blaylock and Redline
- Audie Blaylock And Redline
- Auldridge
- Auldridge, Bennett, Gaudreau
- Auldridge-Bennett-Gaudreau
- Austin Lounge Lizards
- Austin Lucas