- Sisters To The Rescue: A Pair of Mail Order Bride Romances
- Sisters, West!
- Sitting Bull
- Six Months in Montana
- Six Pack Ranch: Books 1-3
- Six Pack Ranch: Books 4-6
- Six Sisters: A Pair of Mail Order Bride Romances
- Six Weeks to Catch a Cowboy
- Six-Guns and Silk
- Sixteen in Nome
- Sizzle All Day
- Skirt Steak
- Sky Cowboy
- Skystone Canyon
- Slade [Bounty Hunting Brothers]
- Slammed Again
- Sleigh Bells & Mistletoe: A Short Story
- Sleigh Bells in Valentine Valley
- Sleigh Bride
- Sleigh Ride with the Rancher
- Slick Rock, Volume 1 [Box Set 64]
- Slocum #288: Slocum Down Mexico Way
- Slow Burn
- Slow Burn Cowboy
- Slow Rider
- Small Town Charm
- Small Town Charmers: Boxed Set
- Small Town Romance Boxed Set: Books 1 - 5
- Smitten Before the Sunset
- Smoked Gin
- Smokin' Hot Cowboy Christmas
- Smooth Talking Stranger
- Smooth Talking Texan
- Smooth-Talking Texan
- Snake Charmer
- Snow Kisses
- Snowbound at Christmas
- Snowbound in Montana
- Snowbound in Starlight Bend
- Snowbound with the Sheriff
- Snowbound with the Sheriff
- Snowed in for a Second Chance
- Snowed in with the Cowboy
- Snowed in with the Single Dad
- Snowfall
- Snowfall in Cold Creek & A Deal Made in Texas
- Snowflakes on the Sea
- Snowflakes Over Bay Tree Terrace
- Snowy Mountains Cattleman (A Bundilla Novel, #2)
- Snowy Mountains Daughter (A Bundilla Novel, #1)
- Snowy River Man
- Snowy, Snowy Nights
- So I Tamed a Texan
- So Wide the Sky (The Women's West Series, Book 1)
- So Wills the Heart
- Sock Poacher and the Shower Thief
- Soft Metal
- Soiled Dove
- Sold To The Cowboy Baron In Texas: A Short Love Story
- Soldier Boy
- Soldier's Secret Child
- Solid Gold Cowboy
- SOLITAIRE
- Solitary (A Pair of Historical Western Romances)
- Sombres sommets
- Some Girls Do
- Some Girls Lie
- Some Kind of Hero
- Some Like It Hot
- SOME LIKE IT SIZZLING
- Somebody Like You
- Someday
- Someone
- Someone Is Guiding Her Life From Heaven: A Mail Order Bride Romance
- Someone To Trust
- SOMEONE TO WATCH OVER ME
- Something about the Boss...
- Something About the Season
- Something Blue
- Something Borrowed, Something True
- Something in the Wine
- Something Like Love
- Something More
- Something To Look Forward To
- Somewhere
- Somewhere Along the Way
- Somewhere in Texas
- Sommerglück in Rose Creek
- Son Cowboy de Noël Ty
- Son Cowboy Protecteur Chase
- Son Cowboy Providentiel Dalton
- Son Cowboy Salvateur Rafe
- Son cowboy Texan Cliff
- Son of a Gambling Man
- Sonata
- Song of Freedom
- Song of the West
- Song of Years
- Sonoran Nights
- Sophia
- Sophia's Leap-Year Courtship
- Sophia, Die Versandbräute von San Francisco, Buch 4
- Sophie's Key
- Sopra brilla il cielo
- Sorry Knot Sorry: An Mpreg Romance
- Sous les nuages du ranch
- South
- South Dakota Series Boxed Set (Books 1-3)
- South of Forever
- South Pass Brides
- South Riding - An English Landscape
- Southern Belle Civil War
- Southern Belle Civil War - Away Down South: Romance Short Stories
- Southern Belle Civil War - Magnolias and Lace: Romance Short Stories
- Southern Belle Civil War - North and South: Love Always - Beyond Enemy Lines
- Southern Belle Civil War - The Couvions: Hearts Under Siege - Hearts Under Fire
- Southern Belle Civil War - The Early Years: Romance Short Stories
- Southern Belle Civil War - The Quinn Family