| Mélange |
| Mackinac Island |
| Magic Graves |
| The Magic of Christmas |
| Magic of Christmas (HH) |
| The Magic Shop |
| Magic Slippers |
| The Magical Christmas Cat |
| Magical Kittens |
| Magical Seduction |
| Magically Delicious |
| The Magicians |
| The Mail-Order Brides Collection |
| Mail-Order Marriages (HH) |
| Mail-Order Mishaps |
| The Mail-Order Standoff |
| Maitland Maternity Christmas |
| Making Spirits Bright |
| Malice Domestic 1 |
| Malice Domestic 11: Murder Most Conventional |
| Malice Domestic 12: Murder Most Historical |
| Malice Domestic 13: Mystery Most Geographical |
| Malice Domestic 14: Mystery Most Edible |
| Malice Domestic 3 |
| Malice Domestic 4 |
| Malice Domestic 5 |
| Malice Domestic 6 |
| Mama Dear |
| Mama's Little Matchmaker |
| The Mammoth Book of 20th Century Ghost Stories |
| The Mammoth Book of Paranormal Romance |
| The Mammoth Book of Paranormal Romance 2 |
| The Mammoth Book of Regency Romance |
| Mammoth Book of Special Ops Romance |
| The Mammoth Book of Vampire Romance 2 |
| The Mammoth Book of Vampire Romances |
| The Mammoth Book of Vampire Stories by Women |
| Man of My Dreams |
| Man of My Dreams (Kensington) |
| Man of the House |
| Manaconda |
| Maneater |
| Manhattan Mayhem |
| Manhunting |
| Many Bloody Returns |
| The Many Faces of Van Helsing |
| Marked (self published) |
| Marriage by Design |
| Marriage for Keeps |
| Married at Midnight |
| Married in Spring |
| Marry Me Cowboy! |
| Marrying My Cowboy |
| The Marvel Superheroes |
| Masquarade |
| Masquerade |
| Massacre at Fall Creek |
| Master of Secret Desires |
| Master's Choice: Volume II |
| Masters of Midnight |
| A Match for Mother |
| A Match for Papa |
| A Match Made in Texas |
| The Matchmaker Brides Collection |
| Matchup |
| Mated |
| Maternity Leave |
| Matters of the Heart |
| Mean Streets |
| Mechanized Masterpieces |
| The Memory of a Kiss |
| Men at Work |
| Men At Work (Blaze) |
| Men In Blue |
| Men of Courage |
| Men Of Courage II |
| Men of Danger |
| Men on Fire |
| Men Out of Uniform |
| Men to Die For |
| Merry & Bright |
| Merry Christmas, Baby |
| Merry Christmas, Baby! |
| Merry Christmas, My Love |
| Merry Little Christmas |
| Merry Sexy Christmas |
| A Message From Cupid |
| The Message in a Bottle Romance Collection |
| Metatropolis |
| Midnight Clear |
| Midnight Clear (Genesis) |
| Midnight Clear, Too |
| Midnight Cravings |
| Midnight Fantasies |
| Midnight Hunger |
| Midnight Justice |
| Midnight Kiss |
| Midnight Magic |
| The Midnight People |
| Midnight Pleasures |
| Midnight Scandals |
| Midnight Treat |
| Midsummer Night's Madness |
| Midsummer Night's Magic |
| The Midwife's Legacy (Romancing America) |
| A Midwinter Fantasy |
| Millenium Baby |
| Millennium Madness |
| A Million Blessings |
| Mills & Boon New Voices |
| Mirror, Mirror |
| Mischief and Mistletoe |
| The MissAdventure Brides Collection |
| Missing in Manhattan |
| Missouri Memories |
| Misspelled |
| Mistletoe |
| Mistletoe (Scholastic) |
| Mistletoe & Magic |
| Mistletoe and Mayhem |
| A Mistletoe Christmas |
| Mistletoe Christmas (2021) |
| Mistletoe Courtship |
| Mistletoe Kisses (HH) |
| Mistletoe Kittens |
| Mistletoe Magic |
| Mistletoe Marriages |
| Mistletoe Memories |
| Mistletoe Miracles |
| Mistletoe Wishes |
| The Mistress Bonus Book |
| Mob Magic |
| Modern Treasury of Great Detective and Murder Mysteries |
| The Monkey's Wedding and Other Stories |
| Montana Born |
| Montana Bred |
| Montana Mavericks Weddings |
| Montana Mavericks: Big Sky Brides |
| Montana Mavericks: Big Sky Grooms |
| Montana, Mistletoe, Marriage |
| Moon Cake and Other Stories |
| Moon Fever |
| Moon Shadows |
| Moonglow |
| Moonlight and Mistletoe |
| Moonlight and Shadows |
| Moonlight Lovers |
| Moonlight, Madness and Magic |
| More Blazing Bedtime Stories |
| More Lipstick Chronicles |
| More Mystery Cats |
| More Than Skin Deep |
| More Than Words |
| More Than Words 7 |
| More Than Words Volume 3 |
| More Than Words Volume 4 |
| More Than Words, Volume 2 |
| More Than Words, Volume 5 |
| More Than Words, Volume 6 |
| More Than Words: Acts of Kindness |
| More Than Words: Stories Of Courage |
| More Than Words: Stories of Hope |
| More Than Words: Stories of Strength |
| More Than Words: Where Dreams Begin |
| The Morgue the Merrier |
| Mossy Creek |
| The Most Eligible Bachelor Romance Collection |
| Most Likely to Die |
| Most Wanted (Dafina) |
| The Most Wonderful Time |
| Mother by Design |
| Mother, Please! |
| A Mother's Day |
| A Mother's Delight |
| A Mother's Gift |
| Mother's Gift (Love Inspired) |
| A Mother's Heart |
| A Mother's Heart - 1998 |
| A Mother's Heart - 2009 |
| A Mother's Joy |
| A Mother's Love |
| A Mother's Love - 1996 |
| A Mother's Love - 1997 |
| A Mother's Love - Palisades |
| A Mother's Love (Harlequin) |
| A Mother's Touch |
| A Mother's Way |
| Mother's Wedding Day |
| Motherhood Is Murder |
| Mothers and Daughters (Steeple Hill) |
| Mothers and Sons |
| Mothers of The Year |
| Mountain Magic |
| Moving Targets and Other Tales of Valdemar |
| Mr. Satisfaction |
| Murder among Friends |
| Murder at Almack's |
| Murder for Love |
| Murder in Manhattan |
| Murder in the Family |
| Murder Most Cozy |
| A Murder of Crows |
| Murder on the Aisle |
| Murder on the Run |
| Murderous Schemes |
| Must Love Hellhounds |
| My Big Fat Supernatural Honeymoon |
| My Big Fat Supernatural Wedding |
| My Blue Suede Shoes |
| My Darling Bride |
| My Darling Valentine |
| My Dashing Groom |
| My Favorite Rogue |
| My Funny Valentine |
| My Guardian Angel |
| My Heroes Have Always Been Cowboys |
| My Immortal Highlander |
| My Only Valentine |
| My Scandalous Bride |
| My Scottish Summer |
| My Secret Admirer |
| My Spellbound Heart |
| My Sweet Valentine |
| My True Love Gave to Me |
| My Valentine 1991 |
| My Valentine 1992 |
| My Valentine 1993 |
| My Valentine 1994 |
| My Zombie Valentine |
| Mysteria |
| Mysteria Lane |
| Mysteries of Lost Angel Inn |
| Mysterious Pleasures |
| Mystic Visions |
