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- M*A*S*H ("Suicide Is Painless") - Johnny Mandel and Mike Altman
- MacGyver - Randy Edelman
- Mad About You ("Final Frontier") - Ernest Gold
- Magnum, P.I. - Ian Freebairn-Smith (Season 1); Mike Post and Pete Carpenter (remaining seasons)
- Makin' It - David Naughton
- Malcolm in the Middle ("Boss of Me") - They Might Be Giants
- Maniac Mansion - Jane Siberry and Mary Margaret O'Hara
- Man in a Suitcase - Ron Grainer
- Mannix - Lalo Schifrin
- Man of the World - Henry Mancini
- Married... with Children ("Love and Marriage") - Sammy Cahn and Jimmy Van Heusen; performed by Frank Sinatra
- The Mary Tyler Moore Show ("Love is All Around") - Sonny Curtis
- Match Game ("A Swingin' Safari") - Billy Vaughn
- Maude ("And Then There's Maude") - Donny Hathaway
- Maverick - David Buttolph
- Mayberry R.F.D. ("Mayberry March") - Earle Hagen, Pete Carpenter and Carl Brandt
- McHale's Navy - Axel Stordahl
- Melrose Place - Tim Truman
- Miami Vice - Jan Hammer
- The Midnight Special - ("Midnight Special") - Johnny Rivers
- Mighty Morphin Alien Rangers - Ron Wasserman
- Mighty Morphin Power Rangers - Ron Wasserman
- Mike & Molly ("I See Love") - Keb' Mo'
- Millennium - Mark Snow
- Minder ("I Could Be So Good For You") - Dennis Waterman
- Mission: Impossible - Lalo Schifrin
- Mister Ed - Jay Livingston and Ray Evans
- Monday Night Football ("Heavy Action") - Johnny Pearson
- Monk - Jeff Beal
- The Monkees - The Monkees
- Monty Python's Flying Circus ("Liberty Bell March") - John Philip Sousa
- Moonlighting - Al Jarreau
- Mr. Belvedere ("According to Our New Arrival") - Leon Redbone
- The Munsters - Jack Marshall
- Murder, She Wrote - (JB Fletcher's theme) - John Addison
- My Favorite Martian - George Greeley
- My So-Called Life - W. G. Walden
- My Three Sons - Frank De Vol
- Mystery Science Theater 3000 - seasons 0-5 Joel Hodgson, seasons 5-10 Michael J. Nelson
- The Nanny ("The Nanny Named Fran") - Ann Hampton Callaway
- NBA on NBC ("Roundball Rock") - John Tesh
- NBC Mystery Movie - Henry Mancini
- NBC Nightly News ("The Mission") - John Williams
- NCIS - Numeriklab
- NFL on CBS ("Posthumus Zone") - E. S. Posthumus
- NFL on Fox - Scott Schreer
- The New Avengers - Laurie Johnson
- Newhart - Henry Mancini
- Night Court - Jack Elliott
- NYPD Blue - Mike Post
- Nip/Tuck ("A Perfect Lie") - The Engine Room
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