•
Moyna Macgill ("
Four O'Clock") •
David Macklin ("
Ring-a-Ding Girl") •
Patrick Macnee ("
Judgment Night") •
George Macready ("
The Long Morrow") •
Maggie Mahoney (
Margaret Field) ("
The New Exhibit") •
Nancy Malone ("
Stopover in a Quiet Town") •
Joe Mantell ("
Nervous Man in a Four Dollar Room" and "
Steel") •
Ralph Manza ("
The Dummy") •
Lori March ("
Third from the Sun") •
Theodore Marcuse ("
To Serve Man" and "
The Trade-Ins") •
John Marley ("
Kick the Can" and "
The Old Man in the Cave") •
Nora Marlowe ("
Night Call" and "
Back There") •
Joe Maross ("
Third from the Sun" and "
The Little People") •
Florence Marly ("
Dead Man's Shoes") •
Jean Marsh ("
The Lonely") •
Joan Marshall ("
Dead Man's Shoes") •
Sarah Marshall ("
Little Girl Lost") •
Arlene Martel ("
Twenty Two) (credited as Arline Sax) •
Dewey Martin ("
I Shot an Arrow Into the Air") •
Nan Martin ("
The Incredible World of Horace Ford") •
Ross Martin ("
The Four of Us Are Dying" and "
Death Ship") •
Strother Martin ("
The Grave") •
Lee Marvin ("
The Grave" and "
Steel") •
Ron Masak ("
The Purple Testament") •
Murray Matheson ("
Five Characters in Search of an Exit") •
Jenny Maxwell ("
Long Distance Call") •
Paul Mazursky ("
The Purple Testament", "
The Gift" and "
He's Alive") •
Mitzi McCall ("
The Hitch-Hiker") (uncredited) •
Kevin McCarthy ("
Long Live Walter Jameson") •
Doug McClure ("
Mr. Denton on Doomsday") • Robert McCord: may have made as many as 67 appearances, many uncredited; IMDB confirmed appearances are: "
The Monsters Are Due on Maple Street" (uncredited), "
The Odyssey of Flight 33" (uncredited), "
Long Distance Call" (uncredited), "
A Hundred Yards Over the Rim" (as Robert L. McCord III), "
The Mirror" (uncredited), "
To Serve Man" (uncredited), "
Person or Persons Unknown" (uncredited), "
The New Exhibit" (as Robert L. McCord), "
What's in the Box" (uncredited), "
Mr. Denton on Doomsday" (uncredited), "
Escape Clause" (uncredited), "
Judgment Night" (uncredited), "
A World of Difference" (uncredited), "
A Nice Place to Visit" (uncredited), "
Showdown with Rance McGrew" (uncredited), "
Nick of Time" (uncredited), "
No Time Like the Past" (uncredited), "
Dead Man's Shoes" (uncredited), "
The Silence" (uncredited), "
The Rip Van Winkle Caper" (stunt double, uncredited), "
Dust" (uncredited), "
Mr. Dingle, the Strong" (uncredited), "
I Dream of Genie" (uncredited), "
You Drive" (uncredited), "
Mr. Garrity and the Graves" (uncredited), "
A Kind of a Stopwatch" (uncredited), "
Caesar and Me" (uncredited), "
I Am the Night—Color Me Black" (uncredited), "
Cavender Is Coming" (uncredited), "
The Mind and the Matter" (uncredited), "
Long Live Walter Jameson" (uncredited), and "
The Purple Testament" (uncredited) •
Roddy McDowall ("
People Are Alike All Over") •
John McGiver ("
The Bard" and "
Sounds and Silences") •
John McIntire ("
The Chaser") •
Emily McLaughlin ("
The Jungle") •
John McLiam ("
Miniature", "
Uncle Simon") (uncredited), "
The Midnight Sun" (uncredited), "
The Shelter") •
Horace McMahon ("
Mr. Bevis") •
Jenna McMahon ("
King Nine Will Not Return") •
Maggie McNamara ("
Ring-a-Ding Girl") •
Howard McNear ("
Hocus-Pocus and Frisby" and "
The Bard") •
Eve McVeagh ("
Kick the Can" (uncredited) and "
I Am the Night—Color Me Black") •
Doro Merande ("
The Bard") •
Burgess Meredith ("
Time Enough at Last", "
Mr. Dingle, the Strong", "
The Obsolete Man" and "
Printer's Devil") •
Gary Merrill ("
Still Valley") •
Burt Metcalfe ("
The Monsters Are Due on Maple Street") •
Vera Miles ("
Mirror Image") •
Mark Miller ("
I Dream of Genie") •
Martin Milner ("
Mirror Image") •
Nico Minardos ("
The Gift") •
George Mitchell ("
Ring-a-Ding Girl, "
Jess-Belle", "
Execution", "
The Hitch-Hiker") •
John Mitchum ("
The Rip Van Winkle Caper" and "
Mr. Garrity and the Graves") •
Elizabeth Montgomery ("
Two") •
Ralph Moody ("
The Last Rites of Jeff Myrtlebank") •
Alvy Moore ("
Showdown with Rance McGrew") (uncredited) •
Agnes Moorehead ("
The Invaders") •
Read Morgan ("
What You Need") •
Greg Morris ("
The 7th Is Made Up of Phantoms") •
Howard Morris ("
I Dream of Genie") •
Jeff Morris ("
The 7th Is Made Up of Phantoms") •
Byron Morrow ("
People Are Alike All Over") •
Jeff Morrow ("
Elegy") •
Barry Morse ("
A Piano in the House") •
Billy Mumy ("
Long Distance Call", "
It's a Good Life" and "
In Praise of Pip") •
George Murdock ("
The Dummy") •
Kate Murtagh ("
Mr. Garrity and the Graves") (uncredited) •
Burt Mustin ("
The Night of the Meek" and "
Kick the Can") ==N==