A
- &U - Soul Music
- AB/DC - The Simpsons and The Amazing World of Gumball
- A.D.D - The Rocker
- The Accused - The Smoking Gun Presents World's Dumbest Partiers 3
- Actually, I'm Really Not Sure Yet!- The Dork Diaries: Tales of a Not-So-Talented Pop Star
- Adult Education - She's Out of My League, a Hall & Oates tribute band
- Agar - Saturday Night Live
- Airway To Heaven - madTV
- The Alabama Porch Monkeys - Bamboozled
- The Alan Twitty Project - Even Stevens
- The Alabaster Carnations - Wizards of Waverly Place
- Alaska Nebraska - The Simpsons
- Frances Albacore - Cats Don't Dance
- Alacatrazz - The Simpsons
- Alexander's Ragtime Band - "Alexander's Ragtime Band" (song)
- Alien Autopsy - Ghost World
- Alice Bowie - Up In Smoke
- Alison - MADtv
- Allspice Girls - Nickelodeon Magazine May 1997 "Sing-a-Wrong"
- Ally Dawson - Austin and Ally
- Alphie and Bibi - The Apple
- Altar Boyz - Altar Boyz
- Alto Saxophone - Bonkers TV series
- Alvin and The Chipmunks - Alvin and The Chipmunks
- The Aluminum Potato Chips - Heathcliff: Ghosts, Vampires, Werewolves, and Creepy Things Like That, Geo Gately comic book
- Amber and Cream - Saturday Night Live
- The American Medical Association - the Illuminatus! trilogy
- Analis Sorrimette - Preacher
- The Anarchie Sixx - Desperate Teenage Lovedolls *The Anarchy 6 were a side project of Redd Kross and Dave Markey had two releases were featured on Lovedolls Superstar soundtrack.
- Amazing Joy Buzzards - Amazing Joy Buzzards
- And And! And - The Commitments
- Angel - Rock and Rule
- Angela and Her Bandaconda (later Sir Ducksworthy and His Ducksworthy) - Angela Anaconda
- Angelica - Friday the 13th: The Series
- ANIMALICIOUS - Achewood
- The Annexes - The Suite Life of Zack & Cody
- Annita - Shake, Rattle, and Rock! (1956)
- Anthem - This Is Spinal Tap
- Ape the Gorilla - George of the Jungle (film)
- Ape Sex - Love and Rockets
- Apollonia - Falcon Crest
- Chikako Arai - The H-Man
- The Archies - The Archie Show
- Arseface - Preacher
- Arthur Hodgeson and The Kneecaps - All You Need Is Cash
- The Artist Known As Principal - Nickelodeon Magazine April 1997 "Purple Brain" Pull Out Prank CD cover
- Ashley and The Starlights - Jem
- Asphalt of Pinking - Bossypants
- Athena Asamiya - The King of Fighters
- The Atomic Enchilada - The Turtles Present the Battle of the Bands
- Atomic Sombreros - El Tigre: The Adventures of Manny Rivera
- Auden - Get Crazy
- Austin Moon - Austin and Ally
- Autobahn - The Big Lebowski
- The Average Joe Band - G.I. Joe
- Axl Bundy - Married...With Children
- Axl Roseanne - MAD Magazine, January 1992, "Mad's Twin Peeks"
- The Ayukawas - Kimagure Orange Road
Read more about this topic: List Of Fictional Music Groups