- A Band Called Horse -- Abbott and Costello
- Abby Lorain -- Adam Hurt
- Adam Kenyon -- After Tuesday
- A.G. Olmstead -- Al Dexter
- Al Dexter and His Troopers -- Alain Morisod & Sweet People
- Alamida -- Albert & Gage
- Albert Garcia -- Alexandre Leão
- Alexis Barreto -- Alison Krauss
- Alison Krauss & Union Station -- Allen Higgins
- Allen Hunter -- Almoth Hodges
- Alphonso Ramos -- Amanda Fessant
- Amanda Gilmour -- American Banjo Scruggs and Three Finger Style
- American Buckaroo Orchestra -- Amy Hart
- Amy Helm -- Andrea Pearson
- Andrea Wittgens -- Andy Leftwich
- Andy Lorge -- Angela Hurt
- Angela Portier -- Ann Marie Boskovish
- Ann Marie Calhoun -- Anne Minnery
- Anne Murray -- Anthony Swieneicki
- Anthony Wilson -- Arkamo Rangers
- Arkansas Cotton Pickers -- Arthur Godfrey
- Arthur Kent -- Ashley McBryde
- Ashley Monroe -- Auriemma
- Austin Allsup -- Aynee Osborn