- Oh! Zone
- Oh, Christmas Tree! A Sweet Lesbian Romance
- Oh, Crap! This Jock's Getting Married
- Ohne Anlauf am liebsten jetzt!
- Oil For Olive
- Oito do sete
- Oito Minutos
- OK, Maybe I'm Gay! (His First Gay Threesome)
- Old Acquaintance
- Old Black Magic
- Old Bones
- Old Christmas Magic
- Old Fashioned
- Old Man Peterson, Murder, It's All in the Family
- Old Mop Gender Swap
- Old Music for New People
- Old Poison: Dangerous Ground 2
- Old Sweetheart, Won't You Let Me In?
- Old Vines
- Old Wounds
- Older & Younger Men: Power Play Collection
- Older the Better
- Older Women, Lesbian Desires
- Oldness; or, the Last-Ditch Efforts of Marcus O
- Oleander House (Bay City Paranormal Investigations book 1)
- Olga und Marie
- Oliris
- Olive Juice
- Olive Oil and White Bread
- Oliver
- Oliver and Henry
- Oliver: A Short Story
- Olives for the Stranger
- Olivia
- Olivia's Awakening
- Ollie
- Ollie Morgan [Seven Brothers for McBride 3]
- Ollie’s Haven [Wolf Haven 2]
- Oltre l'evidenza
- Oltre l’arcobaleno Vol 2
- Ombre fatali
- OMEGA Born
- Omega Born [Scent of a Mate 6]
- Omega Bounty
- Omega Daddy
- Omega erforderlich
- Omega Exiled: MM Gay MPREG Shifter Romance
- Omega in Charge
- Omega Lover
- Omega Lover Boxset
- Omega Mine [Blue Moon Wolves 6]
- Omega On A Mission
- Omega on the Run
- Omega Way
- Omega's Baby
- Omega's Baby for the Beach Bear: Sierra Nevada Shifters
- Omega's Baby for the Lodge Bear
- Omega's Bond
- Omega's Choice
- Omega's Dragon: City Lights
- Omega's Dragon: Desert Heat
- Omega's Dragon: Island Sun
- Omega's Fate
- Omega's Flight
- Omega's Future
- Omega's Home
- Omega's Last Chance
- Omega's Love
- Omega's Pack
- Omega's Protector
- Omega's Seductive Call [Gay Mpreg Romance]
- Omega's Song
- Omega's Wedding
- Omegas’ Destined Alpha [Full Collection]: An Omegaverse Mates World Romance
- Omega's Wedding
- Omegas’ Destined Alpha [Full Collection]: An Omegaverse Mates World Romance
- Omegas’ Destined Alpha Collection 1: An Omegaverse Mates World Romance
- Omegas’ Destined Alpha Collection 2: An Omegaverse Mates World Romance
- Omnipotence Enough
- On (re)connaît la chanson - Vol. 2
- On a Bruised Road
- On a Dark Tide
- On a Scale of One to Even
- On a Wednesday In September
- On a Witch's Mind
- On All Fours
- On Armored Wings
- On Chasing Brad Through Purgatory
- On Chocorua
- On Collecting Stamps
- On Company Time
- On Dangerous Ground
- On Division
- On Dragon's Wings
- On Earth We're Briefly Gorgeous
- On Falcon Wings
- On His Feet Again
- On Home
- On Second Thought
- On Silent Paws
- On Strike Against God
- On Swift Horses
- On Target (Special Operations 8)
- On the Air
- On the Brink
- On The Brink
- On the Bus
- On the Come Up
- On The Edge
- On the Edge (Maple Grove 7)