M
- Dick McAuliffe
- Tom McBride
- Dick McCabe
- Windy McCall
- Emmett McCann
- Tom McCarthy
- David McCarty
- Tim McCarver
- Amby McConnell
- Mickey McDermott
- Allen McDill
- Darnell McDonald
- Jim McDonald
- Ed McFarland
- Mike Macfarlane
- Danny MacFayden
- Eddie McGah
- Willie McGee
- Lynn McGlothen
- Art McGovern
- Bob McGraw
- Deacon McGuire
- Alejandro Machado
- Jim McHale
- Marty McHale
- Stuffy McInnis
- Shane Mack
- Archie McKain
- Walt McKeel
- Jud McLaughlin
- Larry McLean
- Billy MacLeod
- Doc McMahon
- Don McMahon
- Marty McManus
- Norm McMillan
- Eric McNair
- Mike McNally
- Gordon McNaughton
- Jeff McNeely
- Norm McNeil
- Keith MacWhorter
- Bill McWilliams
- Bunny Madden
- Mike Maddux
- Pete Magrini
- Ron Mahay
- Pat Mahomes
- Chris Mahoney
- Jim Mahoney
- Mark Malaska
- José Malavé
- Jerry Mallett
- Paul Maloy
- Frank Malzone
- Matt Mantei
- Félix Mantilla
- Jeff Manto
- Robert Manuel
- Heinie Manush *
- Josías Manzanillo
- Phil Marchildon
- Johnny Marcum
- Juan Marichal
- Ollie Marquardt
- Bill Marshall
- Mike Marshall
- Babe Martin
- Anastacio Martínez
- Pedro Martínez
- Ramón Martínez
- Sandy Martínez
- Víctor Martínez
- John Marzano
- Justin Masterson
- Walt Masterson
- Tom Matchick
- Daisuke Matsuzaka
- William Matthews
- Gene Mauch
- Charlie Maxwell
- Wally Mayer
- Chick Maynard
- Carl Mays
- Román Mejías
- Mark Melancon
- Sam Mele
- José Meléndez
- Ski Melillo
- Bob Melvin
- Ramiro Mendoza
- Mike Menosky
- Mike Meola
- Orlando Merced
- Andy Merchant
- Kent Mercker
- Cla Meredith
- Spike Merena
- Lou Merloni
- Jack Merson
- Catfish Metkovich
- Russ Meyer
- John Michaels
- Will Middlebrooks
- Dick Midkiff
- Doug Mientkiewicz
- Dee Miles
- Kevin Millar
- Andrew Miller
- Bing Miller
- Corky Miller
- Elmer Miller
- Hack Miller
- Otto Miller
- Rick Miller
- Trever Miller
- Wade Miller
- Buster Mills
- Dick Mills
- Rudy Minarcin
- Nate Minchey
- Doug Mirabelli
- Charlie Mitchell
- Fred Mitchell
- Johnny Mitchell
- Keith Mitchell
- Kevin Mitchell
- Herb Moford
- Dustan Mohr
- Gustavo Molina
- Vince Molyneaux
- Bill Monbouquette
- Freddie Moncewicz
- Bob Montgomery
- Bill Moore
- Wilcy Moore
- Franklin Morales
- Dave Morehead
- Roger Moret
- Cy Morgan
- Ed Morgan
- Red Morgan
- Ed Morris
- Frank Morrissey
- Clayton Mortensen
- Guy Morton
- Kevin Morton
- Earl Moseley
- Walter Moser
- Jerry Moses
- Wally Moses
- Doc Moskiman
- Brandon Moss
- Les Moss
- Jamie Moyer
- Bill Mueller
- Gordie Mueller
- Billy Muffett
- Greg Mulleavy
- Freddie Muller
- Joe Mulligan
- Frank Mulroney
- Bill Mundy
- David Murphy
- Johnny Murphy
- Rob Murphy
- Tom Murphy
- Walter Murphy
- George Murray
- Matt Murray
- Tony Muser
- Paul Musser
- Alex Mustaikis
- Buddy Myer
- Elmer Myers
- Hap Myers
- Mike Myers
Read more about this topic: Boston Red Sox All-time Roster