- The Ken Peplowski Quintet -- The Kid Espi
- The Kid Slim -- The King David
- THE KING DEXTER ALL-STARS -- The Kirkpatrick Project
- The Kirkwood Spiritual Aires -- The Koby Hayon Trio
- The Kodaks -- The Kyna Kyles Project
- The Kynd -- The Land Of The Bushfire
- The Land Of Voodoo -- The Last Libertines
- The Last Minister -- The Laughing Gravy
- The Laughing Hyena Singers -- The Lebooca Project
- The Lebron Brothers -- The LeMond Sisters
- The Lemondips -- The Liberty Ship
- The Liberty Voices -- The Limns
- The Limousines -- the Little Mountain Band
- The Little Ones -- The Lofty Pillars
- The Logic -- The Long Tomorrow
- The Long Winters -- The Lost Continentals
- The Lost Disciples -- The Love Hijackers
- The Love Interest -- The Lower East Side Pipes
- The Lower Lights -- The Lydia Warren Band
- The Lyds -- The Maddisons
- The Maddox Brothers -- The Mahp
- The Main Attraction -- The Mambo Rebells
- The Mammals -- The Maple Room
- The Maple Room -- The Marlboro Man
- The Marlboros/The Jokers Six -- The Massacoustics
- The Massacres -- The Maxines
- The Maxtone Four -- The Mean Star