| The Aces |
| The Acez |
| The Acid |
| The Ackermans |
| The Acorn |
| The Acro-brats |
| The Action |
| The Action Design |
| The Action Pact |
| The Ad Libs |
| The Adam Makowicz Trio |
| THE ADAMS |
| The Addictions |
| The Addrisi Brothers |
| The Adelaide Robbins Trio |
| The Adicts |
| The Adlibs |
| The Administration |
| The Adolescents |
| The Advent |
| The Adventures |
| The Adventures of Stevie V |
| The Adverts |
| The Aeolians |
| The Aeroplanes |
| The Affection Collection |
| The Afghan Whigs |
| The Afro-American Folk Song Singers |
| The Aft3rparty |
| The Aftergreens |
| The Afterparty |
| The Afterprty |
| The Afters |
| The Age of Colored Lizards |
| The Age of Electric |
| The Age of Rockets |
| The Agents |
| The Aggrolites |
| The Agonist |
| The agony scene |
| The Aids Brigade |
| The Air |
| The Air I Breathe |
| The Airborne Toxic Event |
| The Aislers Set |
| The Alambrix |
| The Alan Bone |
| The Alan Casagrande Quintet |
| The Alan Parsons Project |
| The Alan Parsons Symphonic Project |
| The Alan Price Rhythm & Blues Combo |
| The Alarm |
| The Alarm Clocks |
| The Albion Band |
| The Albion Dance Band |
| The Album Leaf |
| The Alchemist |
| The Alchemist |
| The Aldwych Players |
| The Aleem Brothers |
| The Alex Levin Trio |
| The Alexander Brothers |
| The Alexandra Choir |
| The Alexandrov Red Army Choir |
| THE ALFEE |
| The Alfresco Flavour |
| The Aliens |
| The All American Band |
| The All American Boys Chorus |
| The All American Rejects |
| The All-American Rejects |
| The All Seeing I |
| The All Star Big Band |
| The All Stars |
| The All Stars and Jimmy Page |
| The All Stars Stompers |
| The Allen Farnham Quartet |
| The Allender Band |
| The Allergies |
| The Alley Cats |
| The Alleycats |
| The Allies |
| The Alligators |
| The Allisons |
| The Allman Brothers |
| The Allman Brothers Band |
| The Allstars Collective |
| The Allure |
| The Almanac Singers |
| The Almighty |
| The Almighty GloryUs |
| The Almighty RSO |
| The Almighty Terribles |
| The Almost |
| The Aloha Steamtrain |
| The Alohas |
| The Aloof |
| The Alpha Conspiracy |
| The Alphabet Girls |
| The Alphabet Zero |
