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- M.C. Hamlisch - MAD Magazine January 1992, "Mad's Twin Peeks"
- MC Arm and Hammer - Roundhouse
- MC Skat Kat - Paula Abdul's "Opposites Attract" music video, Forever Your Girl album
- The Machismo Brothers - The Rutles
- Billy Mack - Love Actually
- Mack The Bass - Bonkers TV series
- Reba MacKenzie - Malibu Country
- Madonnatello - MAD Magazine January 1992, "Mad's Twin Peeks"
- Mad Mouse - 20th Century Boys
- Maggotdeath - School of Rock
- The MagicDanny Magical Dreamers - Chrono Cross
- Breathless Mahoney - Dick Tracy
- The Main Street Singers - A Mighty Wind
- The Majestics - Tutti Frutti
- Major Happy's Up-And-Coming Once Upon a Good Time Band - The Rutles Archaeology
- Sarah Marks - Jem comic Special #1 "Opportunity Knocks"
- Mikihisa Maki - Shaman King
- Malachai and His Band - The Real Ghostbusters
- Jamie Mallet, Jr. - Salute Your Shorts
- The Mambo Kings Band - The Mambo Kings
- Wooly Mammoth - Cats Don't Dance
- Desmond Winston Manchester XI - The Royal Tenenbaums
- Earl Manchester - Americathon
- Sonny Mann - It's a Living
- Rex Manning - Empire Records
- Marisol DurĂ¡n- Cheetah Girls 2
- Rachel Marron - The Bodyguard
- The Mars Hotel - Allen Steele's "Live From The Mars Hotel"
- Marsha, Van, and Choco - General Mills Rocky Road cereal commercial
- Ivan Martin - The Harder They Come
- Marty The Rabbit Boy and His Musical Blender - Phineas and Ferb
- Marvin Berry and The Starlighters - Back to the Future
- Massive Head Wound - The Great White Hype
- The Masked Ginny Lynne - Dudley Do-Right and Friends
- The Master Rapper - Post Fruity Pebbles cereal commercials
- The Mathematics - Boys Life
- Dot Matrix - ReBoot
- Sammy Maudlin - SCTV
- The Mau Maus - Bamboozled
- Matt Marvelous - Scooby Doo and The Legend of the Vampire
- Max Frost and The Troopers - Wild in the Streets
- Max Rebo Band - Star Wars
- Patti Mayonnaise - Doug
- Jinnie Sue McAllister - Gordy
- Luke McAllister - Gordy
- Darlene McBride - madTV
- Tulsa McClean - G.I. Blues
- Jerome "Chef" McElroy - South Park
- Pepperoni McWolf - Tom and Jerry Kids
- Wolfy McWolf - Tom and Jerry Kids
- The Meaty Cheesy Boys - Jack In The Box Ultimate Cheeseburger commercial
- Medium Richard - Saturday Night Live, "New Jack Thanksgiving", parody of Little Richard
- The Meddling Kids - Scooby Doo and The Legend of the Vampire
- Me 2 - Round House
- Melvyn Megastar - Jem comics #1 "Has Been"
- Men In Vests - Saturday Night Live, "New Jack Thanksgiving", parody of Men In Hats
- Metalloid - My Little Pony Tales
- Methane Sisters - "As Filthy As It Gets"
- The Merciless Mariachis - Shaman King
- Merciless Slaughter -
- Maria Mercurial - Shadowrun
- Mertz and McGillicuddy - I Love Lucy
- Mertz, Mertz, Ricardo, and Wilson - I Love Lucy
- Ember McLain - Danny Phantom
- The Mice Men - Are You There, God? It's Me, Margaret
- Mick Maggers - Galaxy High School
- Mike McCoy - Spinout
- Garnett McGee - Dallas
- Molly McGuire - Hearts of Fire
- Meconium - This Is Spinal Tap
- Medusa - Medusa: Dare to Be Truthful
- Meg Griffin - Family Guy
- Men Without Testicles - Red Eye w/Greg Gutfeld
- Melvin and The Squirrels - The Simpsons
- The Members of K&B Construction - Home Improvement
- The Merkins - PCU
- Metabollica- Ozzy and Drix
- Metal Corpses - Ladies and Gentlemen, The Fabulous Stains
- Mickey Mouse Orchestra - "The Band Concert", Walt Disney shorts
- Midlife Crisis - Edge City
- The Midnight Riders -Left 4 Dead 2
- Midnight Sam & The Love Patrol - Lizzie McGuire
- MilkCan - UmJammer Lammy
- Mike & The Huckabees - Late Show with David Letterman
- Mikyla - Hanna Montana
- Migraine Headache - Apple iPhone 4 commercial
- Minako Aino - Pretty Guardian Sailor Moon portrayed by Ayaka Komatsu (Live Action)
- The Minstrel - Disney's Adventures of the Gummi Bears
- Miss Kitty - An American Tail: Fievel Goes West
- Miss Piggy - The Muppet Show, The Jim Henson Hour, Muppets Tonight
- Missiles of October - Love and Rockets
- The Misfits - Jem (not to be confused with the actual band The Misfits)
- Mister Band - Achewood
- Misty Marvelous - The Comic Strip, Street Frogs
- Mitch and Mickey - A Mighty Wind
- Mitt & The Romneys - Late Show with David Letterman
- The Moe Szyslak Connection - The Simpsons
- The Moe Szyslak Experience Featuring Homer - The Simpsons
- The Mojo Supremes - Shakey's commercials
- Mojowire - Monk
- Mok (The Magic Man/ Mok Swagger) - Rock & Rule
- Mona and The Hot Slices - WarioWare, Inc.
- Mondos - This Is Spinal Tap
- The Mongrels - Jem movie, unaired
- Monk Fish - Kirk
- The Monkey Puppets - Full House
- Monsters of Harpsichord - Saturday Night Live
- Gabriella Montez - High School Musical
- The Moo Moo Club Band - Rocko's Modern Life, "The Good, The Bad, And The Wallaby"
- Moop - South Park
- Jimmy Moore - The Wedding Singer
- Mordecai and The Rigbys - "The Regular Show"
- Morning Breath - Naturally, Sadie
- Morgan's Army - The Last Days
- The Morongo Roulettes - Morongo Resort and Casino commercials
- Colleen "Stevie" Morton - Saved By The Bell/Good Morning, Miss Bliss
- Mosquitos - Gilligan's Island
- Mother 13 - The Best Show on WFMU
- Mother of the Bride - Wedding Band
- Motherboy - Arrested Development
- The Mothers of Pearl Jam - Roundhouse
- Mothra and The Hand Puppets - Attack Of The Killer Tomatoes The Series
- Mickey Mouse - "The Band Concert", "Orphan's Benefit", "Maestro Mickey", Walt Disney shorts
- Minnie Mouse - Totally Minnie
- Mouse Rat - Parks and Recreation
- Mucous Membrane - Hellblazer
- The Mud Below - This Is Spinal Tap
- Mudslide Crush - Lemonade Mouth
- Mumblin' Jim - Psych-Out
- Mumm-Ra & Sons - MAD
- Munch's Make Believe Band - Showbiz Pizza
- Munchausen By Proxy- Yes Man
- The Muppets - The Muppet Show, Muppets Tonight, The Jim Henson Hour
- The Muppet Babies - Jim Henson's Muppet Babies
- The Murderers - Upright Citizens Brigade
- Emma Murdoch - Dark City
- Murph and The Magic Tones - The Blues Brothers
- Greg "Stork" Murray - Monk
- The Muses - Disney's Hercules, Hercules
- Music For One City and Six Drummers - Sound of Noise
- Music From Some Guys In Space - Mystery Science Theater 3000
- Myga - Jem
- Mythic Slaughterbeast - Questionable Content
- Mystery - Detroit Rock City
- Mystery Kids - What's New Scooby-Doo?
- Mystik Spiral - Daria
Read more about this topic: List Of Fictional Music Groups