M
- Alex Macintosh
- Television Reporter, Day of the Daleks (1972)
- Angus MacKay
- Borusa, The Deadly Assassin (1976)
- Headmaster, Mawdryn Undead (1983)
- Fulton Mackay
- Dr. Quinn, Doctor Who and the Silurians (1970)
- Steven Mackintosh
- Gazak, Timelash (1985)
- Victor Maddern
- Robson, Fury from the Deep (1968)
- Philip Madoc
- Eelek, The Krotons (1968/1969)
- War Lord, The War Games (1969)
- Doctor Solon, The Brain of Morbius (1976)
- Fenner, The Power of Kroll (1978/1979)
- Leonard Maguire
- Draith, Full Circle (1980)
- Louis Mahoney
- Newscaster, Frontier in Space (1973)
- Ponti, Planet of Evil (1975)
- Old Billy, Blink (2007)
- Kevork Malikyan
- Kemel Rudkin, The Wheel in Space (1968)
- Katy Manning
- Jo Grant, Terror of the Autons (1971) - The Green Death (1973)
- Kevin Manser
- Dalek Operator, The Daleks (1963/1964), The Dalek Invasion of Earth (1964), The Chase (1965), Mission to the Unknown (1965), The Daleks' Master Plan (1965/1966), The Power of the Daleks (1966)
- Zarbi, The Web Planet (1965)
- Deborah Manship
- Morgana, The Greatest Show in the Galaxy (1989)
- André Maranne
- Benoit, The Moonbase (1967)
- Joseph Marcell
- John, Remembrance of the Daleks (1988)
- James Marcus
- Peasant, Invasion of the Dinosaurs (1974)
- Rask, Underworld (1978)
- Stephen Marcus
- Jailer, "The Shakespeare Code" (2007)
- Petra Markham
- Safiya, The Crusade (1965)
- Fernanda Marlowe
- Corporal Bell, The Mind of Evil and The Claws of Axos (both 1971)
- William Marlowe
- Mailer, The Mind of Evil (1971)
- Lester, Revenge of the Cybermen (1975)
- Andrew Marr
- Himself, Aliens of London (2005)
- Himself, World War Three (2005)
- Robert Marsden
- Abraham Lincoln, The Chase (1965)
- Roy Marsden
- Mr Stoker, Smith and Jones (2007)
- Jean Marsh
- Joanna, The Crusade (1965)
- Sara Kingdom, The Daleks' Master Plan (1965/1966)
- Morgaine, Battlefield (1989)
- Ian Marter
- John Andrews, Carnival of Monsters (1973)
- Harry Sullivan, Robot (1974/1975) - Terror of the Zygons (1975), The Android Invasion (1975)
- Anna Maxwell Martin
- Suki, The Long Game (2005)
- Derek Martin
- David Mitchell, Image of the Fendahl (1977)
- Jessica Martin
- Mags, The Greatest Show in the Galaxy (1989)
- Voice of the Queen, Voyage of the Damned (2007)
- John Scott Martin
- Dalek operator
- Trevor Martin
- Second Time Lord, The War Games (1969)
- Eric Mason
- Senior Prison Officer Green, The Mind of Evil (1971)
- CPO Smedley, The Sea Devils (1972)
- John Maxim
- Frankenstein, The Chase (1965)
- Cyberman, The Moonbase (1967)
- James Maxwell
- Jackson, Underworld (1978)
- Jack May
- General Hermack, The Space Pirates (1969)
- Richard Mayes
- Chief Baxter, Fury from the Deep (1968)
- Patricia Maynard
- Miss Winters, Robot (1974)
- Belinda Mayne
- Delta, Delta and the Bannermen (1987)
- Gugu Mbatha-Raw
- Tish Jones, "Smith and Jones", "The Lazarus Experiment", "The Sound of Drums"/"Last of the Time Lords"
- David McAlister
- Megara Voices, The Stones of Blood (1978)
- Davina McCall
- Davinadroid, "Bad Wolf"
- Neil McCarthy
- Barnham, The Mind of Evil (1971)
- Thawn, The Power of Kroll (1978)
- Colin McCormack
- Commander, The Sun Makers (1977)
- Sylvester McCoy
- The Doctor, Time and the Rani-(1987)-Survival-(1989), Doctor Who-(1996)
- Helen McCrory
- Rosanna Calvierri, "The Vampires of Venice" (2010)
- Ian McCulloch
- Nilson, Warriors of the Deep (1984)
- Keff McCulloch
- One of the Lorells (a backing group), Delta and the Bannermen (1987)
- McFly
- Themselves, The Sound of Drums (2007)
- Paul McGann
- The Doctor, Doctor Who-(1996)
- Philip McGough
- Sergeant Calder, Resurrection of the Daleks (1984)
- Lloyd McGuire
- Lugo, The Face of Evil (1977)
- Tim McInnerny
- Klineman Halpen, "Planet of the Ood" (2008)
- T. P. McKenna
- Captain Cook, The Greatest Show in the Galaxy (1988-1989)
- Don McKillop
- Bert the Landlord, The Dæmons (1971)
- Dursley McLinden
- Mike, Remembrance of the Daleks (1988)
- Jim McManus
- Ophthalmologist, The Invisible Enemy (1977)
- Kevin McNally
- Hugo Lang, The Twin Dilemma (1984)
- Ian McNeice
- Winston Churchill, "Victory of the Daleks" and "The Pandorica Opens" (both 2010)
- Rhodri Meilir
- Rhodri, "The Runaway Bride"
- Jack Melford
- Menelaus, The Myth Makers (1965)
- Michael Melia
- Terileptil Leader, The Visitation (1982)
- Clive Merrison
- Jim Callum, The Tomb of the Cybermen (1967)
- Deputy Chief Caretaker, Paradise Towers (1987)
- Zienia Merton
- Ping-Cho, Marco Polo (1964)
- William Mervyn
- Sir Charles Summer, The War Machines (1966)
- Ralph Michael
- Balaton, The Pirate Planet (1978)
- Guy Middleton
- Colonel Attwood, The Highlanders (1966–1967)
- Peter Miles
- Dr. Lawrence, Doctor Who and the Silurians (1970)
- Professor Whittaker, Invasion of the Dinosaurs (1974)
- Nyder, Genesis of the Daleks (1975)
- Brian Miller
- Dugdale, Snakedance (1983)
- Dalek voices in Resurrection of the Daleks (1984) and Remembrance of the Daleks (1988)
- Martin Miller
- Kublai Khan, Marco Polo (1964)
- Adrian Mills
- Aris, Kinda (1982)
- Frank Mills
- Radio Telescope Director, Terror of the Autons (1971)
- Royce Mills
- Dalek voices (1984–1988)
- Kylie Minogue
- Astrid Peth, "Voyage of the Damned" (2007)
- Hilary Minster
- Marat, Planet of the Daleks (1973)
- Thal Soldier, Genesis of the Daleks (1975)
- Norman Mitchell
- First Policeman, The Daleks' Master Plan (1965)
- Alexandra Moen
- Lucy Saxon, The Sound of Drums (2007), Last of the Time Lords (2007), The End of Time (2009)
- Georgia Moffett
- Jenny, The Doctor's Daughter (2008)
- Terry Molloy
- Davros, Resurrection of the Daleks (1984), Revelation of the Daleks (1985), Remembrance of the Daleks (1988)
- Russell, Attack of the Cybermen (1985)
- Joanna Monro
- Rega, Planet of the Spiders (1974)
- André Morell
- Marshal Tavannes, The Massacre of St Bartholomew's Eve (1966)
- John Moreno
- Dobson, The Ambassadors of Death (1970)
- Darren Morfitt
- Cleric Marco, "The Time of Angels"-"Flesh and Stone" (2010)
- Charles Morgan
- Songsten, The Abominable Snowmen (1967)
- Gold Usher, The Invasion of Time (1978)
- Naoko Mori
- Doctor Sato, Aliens of London (2005)
- Jonathon Morris
- Chela, Snakedance (1983)
- Mary Morris
- Panna, Kinda (1982)
- Wolfe Morris
- Padmasambhava, The Abominable Snowmen (1967)
- David Morrissey
- Jackson Lake, "The Next Doctor" (2008)
- Clive Morton
- Trenchard, The Sea Devils (1972)
- Bryan Mosley
- Malpha, The Daleks' Master Plan (1965/1966)
- Prop Man, The Daleks' Master Plan (1965/1966)
- Peggy Mount
- Stallslady, The Greatest Show in the Galaxy (1988)
- Lucian Msamati
- Guido, "The Vampires of Venice" (2010)
- Declan Mulholland
- Clark, The Sea Devils (1972)
- Till, The Androids of Tara (1978)
- Carey Mulligan
- Sally Sparrow, Blink (2007)
- Bartlett Mullins
- Second Elder, The Sensorites (1964)
- Carmen Munroe
- Fariah, The Enemy of the World (1967/1968)
- Gerard Murphy
- Richard Maynarde, Silver Nemesis (1988)
- Glen Murphy
- Dibber, The Mysterious Planet (1986)
- Barbara Murray
- Lady Cranleigh, Black Orchid (1982)
- Angelo Muscat
- Chumblie, Galaxy 4 (1965)
- Valentino Musetti
- Saracen Warrior, The Crusade (1965)
- Eve Myles
- Gwynneth, The Unquiet Dead (2005)
- Gwen Cooper, "The Stolen Earth"-"Journey's End"
- Sophia Myles
- Madame de Pompadour, "The Girl in the Fireplace"
Read more about this topic: List Of Doctor Who Cast Members