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- James MacArthur – actor
- Roger Mahony – Roman Catholic Archbishop of Los Angeles
- Daron Malakian – musician
- Cheech Marin – comedian, musician, actor
- Scott Marlowe – actor
- McKayla Maroney - 2012 Olympic Gold(team event) and Silver(vault event) medalist, Competes for the USA National team
- Biddy Mason – pioneer African–American businesswoman
- Chris Masters – professional wrestler
- Thom Mayne – architect
- Leo McCarey – actor, composer, film director, writer, film producer
- Leigh McCloskey – actor, artist
- Kent McCord – actor
- Maureen McCormick – actress
- Ron McGovney – former bassist of Metallica
- Carey McWilliams – writer, editor
- Kristy McNichol – actress
- Katharine McPhee – singer
- Wendy Melvoin – musician
- Lee Meriwether – actress, Miss America
- Miguel, American recording artist
- Michael Milken – financier & philanthropist
- Penelope Ann Miller – actress
- Yvette Mimieux – actress
- Liza Minnelli – actress, singer
- Andrew Mishkin – commander of the Mars rover
- Christopher Mitchum – actor, writer, film director
- Ron Mix – American football player
- Keb' Mo' - blues singer/guitarist/songwriter
- Anthony Mora – publicist, playwright
- Mike Moffitt – American football player
- Dick Moje – American football player
- Marilyn Monroe – actress
- Warren Moon – American football player
- Lisa Moretti – professional wrestler
- Irving J. Moore – television director
- Sonny Moore – (aka Skrillex) DJ, producer
- Terry Moore – actress
- John Morrison – professional wrestler for World Wrestling Entertainment
- William R. Moses – actor
- Walter Mosley – novelist
- Megan Mullally – actress
- Bill Mumy – singer and actor
- Keith Munyan – photographer
- Michael Murphy – actor
- Don Murray – actor
- Eddie Murray – professional baseball player
- Murs – noted rapper
Read more about this topic: List Of People From Los Angeles