| Author | Title | Type | Collection |
| Jonathan Maberry | Dark of Night | novel | |
| Jonathan Maberry | Dead of Night | novel | |
| Jonathan Maberry | Fall of Night | novel | |
| Shawntelle Madison | "If These Walls Could Talk" | short story | Dark Screams: Volume 2 |
| John Mains | "The Spoon" | short story | Third Black Book of Horror, The |
| Barbara Malenky | "A Thing" | short story | From The Borderlands |
| Josh Malerman | Incidents Around the House | novel | |
| Josh Malerman | It Waits in the Woods | novella | |
| Ronald Malfi | Boy in the Lot, The | novella | |
| Ronald Malfi | Floating Staircase | novel | |
| Ronald Malfi | Ghostwritten | short stories | |
| Ronald Malfi | Night Parade, The | novel | |
| Ronald Malfi | Via Dolorosa | novel | |
| Nick Mamatas | Bullettime | novel | |
| Nick Mamatas | editor | Haunted Legends | |
| Nick Mamatas | Last Weekend, The | novel | |
| Stephen Marlowe | Translation | novel | |
| David Martin | Tap, Tap | novel | |
| George R.R. Martin | editor | Wild Cards (01): I | |
| George R.R. Martin | editor | Wild Cards (02): II: Aces High | |
| George R.R. Martin | editor | Wild Cards (03): III: Jokers Wild | |
| George R.R. Martin | editor | Wild Cards (04): IV: Aces Abroad | |
| George R.R. Martin | editor | Wild Cards (05): V: Down and Dirty | |
| George R.R. Martin | editor | Wild Cards (06): VI: Ace in the Hole | |
| George R.R. Martin | editor | Wild Cards (07): VII: Dead Man's Hand | |
| George R.R. Martin | editor | Wild Cards (08): VIII: One-Eyed Jacks | |
| George R.R. Martin | editor | Wild Cards (09): IX: Jokertown Shuffle | |
| George R.R. Martin | editor | Wild Cards (10): X: Double Solitaire | |
| George R.R. Martin | editor | Wild Cards (11): X: Dealer's Choice | |
| George R.R. Martin | editor | Wild Cards (12): X: Turn of the Cards | |
| George R.R. Martin | editor | Wild Cards - Book 1 of a new Cycle: Card Sharks | |
| George R.R. Martin | editor | Wild Cards - Book 2 of a New Cycle: Marked Cards | |
| George R.R. Martin | editor | Wild Cards - Book 3 of a New Cycle: Black Trump | |
| Elizabeth Massie | Hell Gate | novel | |
| Elizabeth Massie | "Miss Dowdy" | short story | Portents |
| Graham Masterton | 5th Witch, The | novel | |
| Graham Masterton | Doorkeepers, The | novel | |
| Graham Masterton | Flesh and Blood | novel | |
| Graham Masterton | "Heroine" | short story | Hot Blood: Kiss and Kill |
| Graham Masterton | House That Jack Built, The | novel | |
| Graham Masterton | "Jack Be Quick" | short story | White House Horrors |
| Graham Masterton | "Night Hider, The" | short story | Dark Screams: Volume 2 |
| Graham Masterton | "Picnic at Lac Du Sang" | short story | Hot Blood: X |
| Graham Masterton | Red Light | novel | |
| Graham Masterton | "Sepsis" | short story | Vile Things: Extreme Deviations of Horror |
| Graham Masterton | "Suffer Kate" | short story | Hot Blood: Deadly After Dark |
| Graham Masterton | Tales Too Extreme For Cemetery Dance | chapbook | |
| Graham Masterton | "The Ballyhooly Boy" | short story | Mammoth Book of Best New Horror, Vol. 11 |
| Graham Masterton | "The Grey Madonna" | short story | Mammoth Book of Best New Horror, Vol. 7 |
| Richard Matheson | 7 Steps to Midnight | novel | |
| Richard Matheson | Camp Pleasant | novel | |
| Richard Matheson | Duel | novel | |
| Richard Matheson | Hell House | novel | |
| Richard Matheson | Hunted Past Reason | novel | |
| Richard Matheson | I Am Legend | novel | |
| Richard Matheson | Incredible Shrinking Man, The | short stories | |
| Richard Matheson | Nightmare at 20,000 Feet | short stories | |
| Richard Matheson | Now You See It ... | novel | |
| Richard Matheson | "Prey" | short story | Urban Horrors |
| Richard Matheson | Stir of Echoes | novel | |
| Richard Matheson | "Where There's a Will" | short story | Dead That Walk, The |
| Richard Christian Matheson | Created By | novel | |
| Richard Christian Matheson | "Mobius" | short story | Best of Cemetery Dance, Vol. 1 |
| Richard Christian Matheson | "Whatever" | short story | Dark Screams: Volume 2 |
| Richard Christian Matheson | "Where There's a Will" | short story | Dead That Walk, The |
| Christine Matthews | "Winning Ticket" | short story | Interrogator and Other Criminally Good Fiction, Th |
| Mark Matthews | editor | Garden of Fiends: Tales of Addiction Horror | |
| Ardath Mayhar | "Nasty Way to Go, A" | short story | Dark Delicacies III: Haunted |
| Bruce McAllister | Girl Who Love Animals and Other Stories, The | short stories | |
| Gillian McAllister | Wrong Place Wrong Time | novel | |
| Robert R. McCammon | Baal | novel | |
| Robert R. McCammon | Bethany's Sin | novel | |
| Robert R. McCammon | Blue World | novel | |
| Robert R. McCammon | Boy's Life | novel | |
| Robert R. McCammon | "Deep End, The" | short story | Dark Screams: Volume 2 |
| Robert R. McCammon | Gone South | novel | |
| Robert R. McCammon | Mine | novel | |
| Robert R. McCammon | Mystery Walk | novel | |
| Robert R. McCammon | Night Boat, The | novel | |
| Robert R. McCammon | Stinger | novel | |
| Robert R. McCammon | Swan Song | novel | |
| Robert R. McCammon | They Thirst | novel | |
| Robert R. McCammon | Usher's Passing | novel | |
| Robert R. McCammon | Wolf's Hour, The | novel | |
| Angel Leigh McCoy | "Coquettrice" | short story | Vile Things: Extreme Deviations of Horror |
| Kirstyn McDermott | "We All Fall Down" | short story | Mammoth Book of Best New Horror, Vol. 22 |
| Gregory McDonald | Carioca Fletch | novel | |
| Gregory McDonald | Confess, Fletch | novel | |
| Gregory McDonald | Fletch | novel | |
| Gregory McDonald | Fletch and the Man Who | novel | |
| Gregory McDonald | Fletch and the Widow Bradley | novel | |
| Gregory McDonald | Fletch Reflected | novel | |
| Gregory McDonald | Fletch Won | novel | |
| Gregory McDonald | Fletch's Fortune | novel | |
| Gregory McDonald | Fletch's Moxie | novel | |
| Gregory McDonald | Fletch, Too | novel | |
| Gregory McDonald | Skylar | novel | |
| Gregory McDonald | Skylar in Yankeeland | novel | |
| Gregory McDonald | Son of Fletch | novel | |
| Patrick McGrath | Asylum | novel | |
| Patrick McGrath | Spider | novel | |
| Lucky McKee | I'm Not Sam | novel | |
| Shane McKenzie | Pus Junkies | novel | |
| Joe McKinney | editor | Forsaken,The : Stories of Abandoned Places | |
| Joe McKinney | "Ghost Town" | short story | Forsaken,The : Stories of Abandoned Places |
| Mark McLaughlin | "Largesse" | short story | Year's Best Horror Stories: Vol. XXI |
| Ian R. McLeod | "Tirkiluk" | short story | Mammoth Book of Best New Horror, Vol. 7 |
| William Meikle | Broken Sigil | novel | |
| William Meikle | Hole, The | novel | |
| Carlton Mellick III | ClownFellas: Tales of the Bozo Family | novel | |
| S.C. Mendes | editor | Blood Bank | |
| Adam Meyer | "Resurrection" | short story | Year's Best Horror Stories: Vol. XXII |
| Victor Milan | editor | Wild Cards (12): X: Turn of the Cards | |
| Rex Miller | "Bunky" | short story | Shock Rock |
| Rex Miller | "The Watcher" | short story | Hot Blood: Seeds of Fear |
| A.A. Milne | World of Pooh, The | novel | |
| Keith Minnion | Blood Splattered & Politically Incorrect | chapbook | |
| Keith Minnion | Island Funeral | novella | |
| Keith Minnion | "Up In The Boneyard" | short story | Shivers IV |
| Mary Ann Mitchell | "The Hyacinth Girl" | short story | Year's Best Horror Stories: Vol. XXI |
| Elizabeth E. Monteleone | editor | From The Borderlands | |
| Thomas F. Monteleone | Fearful Symmetries | novel | |
| Thomas F. Monteleone | editor | From The Borderlands | |
| Thomas F. Monteleone | "Horn of Plenty" | short story | Shivers III |
| Thomas F. Monteleone | "It's In The Bag" | short story | Cemetery Dance |
| Thomas F. Monteleone | "Real Gun Control is Hitting What You Aim At" | short story | Blood Splattered & Politically Incorrect |
| Thomas F. Monteleone | "Rehearsals" | short story | 999 |
| Thomas F. Monteleone | Resurrectionist, The | novel | |
| Thomas F. Monteleone | "The Wager" | short story | Shivers |
| C. Dennis Moore | "Caterpillar, The" | short story | Vile Things: Extreme Deviations of Horror |
| James A. Moore | editor | British Invasion | |
| James A. Moore | Dear Diary: Run Like Hell | novel | |
| James A. Moore | Haunted Forest Tour | novel | |
| Sean A. Moore | "10585" | short story | It Came From the Drive-In |
| Chris Morey | editor | Christmas Horror, Vol. 1 | |
| Christine Morgan | "Drinking Horn, The" | short story | Brewtality: Extreme Horror Anthology |
| Jill M. Morgan | "Scandal" | short story | White House Horrors |
| A.R. Morlan | "The Toddler Pit" | short story | Ultimate Zombie |
| David Morrell | Black Evening | short stories | |
| David Morrell | Brotherhood of the Rose, The | novel | |
| David Morrell | Creepers | novel | |
| David Morrell | "Front Man" | short story | Crucified Dreams |
| David Morrell | "If I Should Die Before I Wake" | short story | Revelations |
| David Morrell | "Interrogator, The" | short story | Interrogator and Other Criminally Good Fiction, Th |
| David Morrell | NightScape | short stories | |
| David Morrell | "Nothing Will Hurt You" | short story | MetaHorror |
| David Morrell | "Rio Grande Gothic" | short story | 999 |
| David Morrell | Scavenger | novel | |
| David Morrell | "The Typewriter" | short story | Gallery of Horror |
| Mark Morris | "Stumps" | short story | Fourbodings |
| Robert Morrish | editor | October Dreams II: A Celebration of Halloween | |
| Lisa Morton | Castle of Los Angeles, The | novel | |
| Lisa Morton | "New War, The" | short story | Dark Screams: Volume 4 |
| Lisa Morton | "Rich Are Different, The" | short story | Dark Screams: Volume 6 |
| Billie Sue Mosiman | "Twisted and Gnarled" | short story | Dark Screams: Volume 8 |
| Jason Mott | Best of Luck | novella | |
| Cheryl Mullenax | editor | Vile Things: Extreme Deviations of Horror | |
| Pat Murphy | "Love and Sex Among the Invertebrates" | short story | Alien Sex |
