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- Bruce Mackinnon of Pomme De Chien
- Dave MacRae of Matching Mole
- Phil Madeira
- Eric Malmberg
- Mike Mangan
- Manfred Mann (musician)
- Ray Manzarek (The Doors) (Used Hammond on Wild Child and The Changeling)
- Bruno Marini (organist)
- Money Mark (Beastie Boys)
- Hank Marr
- Shea Marshall
- Pete Mazich
- Paul McCartney
- Page McConnell
- Jack McDuff
- Jimmy McGriff
- Goldy McJohn
- Duncan Mackay
- Ron "Pigpen" McKernan used a Hammond organ during most of his tenure with The Grateful Dead (before and after Tom Constanten joined the group) until his death in 1973.
- Ian McLagan of the Small Faces and the Faces
- Christine McVie of Fleetwood Mac used a custom chopped B-3 throughout her career.
- John Mealing of the British jazz-rock band If.
- Paul Meany of MUTEMATH and formerly of Earthsuit.
- John Medeski
- Natalie Merchant
- Freddie Mercury (Queen)
- Mic Michaeli (Europe)
- Lee Michaels
- John Miles Solo Artist, Session Musician, Touring Musical Director and Keyboard/Rhythm Guitar player with Tina Turner Tina Live in Europe
- Mike Mills of R.E.M. – see Radio Song
- Kerry Minnear of Gentle Giant
- Jackie Mittoo, co-founder of The Skatalites
- Patrick Moraz of Refugee (band) and Yes
- Jeff Muendel
- Dean Mumford
- Brent Mydland
Read more about this topic: List Of Hammond Organ Players