- Anthony Michael James
- Anthony Perry
- Anthony Rivera
- Anthony Smith
- Anthony Swieneicki
- Anthony Wilson
- Anthony "Ziggy" Johnson
- Antonio Rosales
- Any Old Time String Band
- A.P. Carter
- Apocalyptic Cowboys
- APOSTLE R.T. SHIPP JR.
- Appalachian Trail
- Apple Pie Hopes
- April Metcalf
- April Taylor
- Apryl Murray
- Arabella Jones
- Arbiter Deputy
- Archer & Park
- Archer Street Rams
- Archibald L. Camp
- Archie Campbell
- Archie Jordan
- Archie Sturgill
- Ardele Wartow
- Area Code 512
- Area Code 615
- Ari Shine
- Ari Vaughan
- Aria Eaton
- Ariane Lydon
- Arild Espen Aas
- Arizon Smoke Revue & The Blackwater Boys
- Arizona Rhythm Riders
- Arizona Wranglers
- Arkamo Rangers
- Arkansas Cotton Pickers
- Arkansas Woochopper
- Arkansas Woodchopper
- Arkey Blue
- Arkie the Arkansas Woodchopper
- Arleen Harden
- Arlene Bailey
- Arlene Hynes
- Arlene Shrut
- Arlie Duff
- Arm & Hammer String Band
- Armadillo
- Armando Muniz
- Armel
- Arnie Solomon
- Arnthor Birgisson
- Aron Dees