- Midnight Rescue
- Midnight Revenge
- Midnight Runaway
- Midnight Sins
- Midnight Son
- Midnight Storm
- Midnight Target
- Midnight Trust
- Mike
- Mile High Affair
- Miles
- Miles Apart
- Military Man
- Military Matchmate
- Military Men
- Military Romance: Seduced by the Soldiers
- Milk Money
- Millionaire Cop & Mom-To-Be
- Millionaire in Command
- Mind Game
- Mine Series Box Set Volume 1
- Mine Series Box Set Volume 2
- Mine Series Deluxe Box Set
- Mine To Crave
- Mine To Hold
- Mine To Keep
- Mine To Protect
- Mine To Protect
- Mine to Save
- Mine to Serve
- Mine To Take
- Miss Truelove Beckons
- Missing
- Missing (you)
- Missing and Presumed Dead
- Missing in Action
- Mission Control
- Mission Delivery
- Mission: Accept
- Mission: Believe
- Mission: Compromised Submissive
- Mission: Courage
- Mission: Impossible to Deny
- Mission: Impossible to Forget
- Mission: Impossible to Love
- Mission: Impossible to Protect
- Mission: Impossible to Resist
- Mission: Impossible to Surrender
- Mission: Impossible to Wed
- Mission: M.D.
- Mission: Repair
- Mission: Seduction
- Mistletoe in the Moonlight
- Mistletoe Marriage
- Mistletoe Miracles
- Mistletoe Summer
- Mit dem Biest verpartnert
- Mit Feuer und Schwert. Historischer Roman in vier Bänden. Band IV
- Mixing Temptation
- Mob Mistress
- Mockingbird's Cry
- Model Marine
- Molly's Mr. Wrong
- MOM IN WAITING
- MOMMY BY SURPRISE
- Mommy in Training
- Mommy Midwife
- Mon Destin
- Mon frère Yves
- Mon tourmenteur: Une romance dark
- Monica Beggs
- Montana Angel
- Montana brûlant
- Montana Defender
- Montana Fire
- Montana Men - Complete Boxed Set
- Montana Männer Sammelband
- Montana Protector
- Montana Red
- Monterey King
- Moon Madness
- Moonlight Serenade
- Moonlight, Motorcycles, and Bad Boys
- MOONRISE
- Moonshell Beach
- Moonshine
- Moonstruck: Secrets
- Moose
- More Than A Cowboy Boxed Set
- More Than a Hero
- More Than a Spirit
- More Than Just Friends
- More Than Love
- More than One Night
- More Than Words
- More, Please
- More Than Words
- More, Please
- Morgan
- Morgan's Marriage
- Morgan's Rescue
- Morgan's Son
- Morgan's Wife
- Most Wanted Woman
- MOTHER TO BE
- Motorhead (Book 3)
- Mountain Darkness
- Mountain Delights
- Mountain Laurel
- Mountain Ranger Recon
- Mountain Rescue
- Moving Target
- Mr. and Mr. Smith
- Mr. and Mrs. Medal of Honor
- Mr. Beast
- Mr. Charming
- Mr. Standfast
- Much Ado About Matchmaking
- Mucho Más Que Solo Un Vaquero Set Completo
- Muck (Book 1)
- Muck (Book 3)
- Murder Game
- Murder on the Mountain
- MURDOCK'S LAST STAND
- Murphy's Law (Annotated reissue originally published 2001)
- Muse
- Music for Love or War
- Music to His Ears
- Mustang Annie
- My Beloved
- My Billionaire Hot Seal
- My Billionaire's Nanny
- My Billionaire's Obsession
- My Billionaire's Touch
- My Cowboy Soldier: A Reynolds Family Holiday Romance
- My Daddy Is a Hero 3 (Gunny Sergeant Aidan Brooks)
- My Daddy Is a Hero 4 (Captain Simon Brevard)
- My Daddy Is a Hero 1 (Master Chief Marrone)
- My Daddy Is a Hero 2 (First Lieutenant Cutter)
- MY DADDY THE DUKE
- My Darling
- My Donut Princess
- My Enemy, My Love