M
- M (outside the US and Canada)
- Manitoba's Wild Kingdom (MCA/Popular Metaphysics)
- Marilyn Manson (Only from 1994 till 1997)
- Jimmy Martin
- Jason McCoy (Canada only)
- Meat Loaf (US and Canada only)
- Glenn Medeiros
- Dannii Minogue
- Bill Monroe
- Chanté Moore
- Gary Moore
- Alanis Morissette (Canada only)
- Steve Morse
- Musical Youth
Read more about this topic: List Of MCA Records Artists