- The Knocks
- The Knux
- The Kolors
- The Kooks
- The Koolaid Electric Company
- The Kop Choir
- The Korgis
- The Koxx
- The Kry
- The Kubas
- The Kurt Carr Singers
- The Kvb
- The L Word
- The Lacs
- The Ladybug Transistor
- The Lafontaines
- The Lake Poets
- The Lambrettas
- The Lamp Of Thoth
- The Lancashire Hotpots
- The Langley Sisters
- The Larry Bagby Band
- The Lashes
- The Last Bison
- The Last Charge
- The Last Felony
- The Last Goodnight
- The Last Hangmen
- The Last Internationale
- The Last One Hero
- The Last Rock N Roll Band
- The Last Royals
- The Last Shadow Puppets
- The Last Six Pages
- The Last Sleepless City
- The Last Ten Seconds Of Life
- The Last Vegas
- The Last Word
- The Laurels
- The Laurie Berkner Band
- The Lautsprechers
- The Lazys
- The League
- The Leather Uppers
- The Lebanese Forces
- The Lee Kings
- The Leevees
- The Left
- The Left Rights
- The Legendary Shack Shakers