- Silver-Tongued Temptress
- Silverbeach Manor
- Silverheels Mountain of Love
- Silvervärjan
- Simmer All Night
- Simmer Down, Red
- Simon Finds Trouble
- Simon The Coldheart
- Simon's Lady
- Simon's Wife
- Simple Gifts
- Simple Musings
- Simplemente inolvidable
- Simplemente mágico
- Simples - Tome I
- Simply Beautiful
- Simply Forbidden
- Simply Heaven
- Simply Magic
- Simply Perfect
- Simply Pleasure
- Simply Shameless
- Simply Unforgettable
- Simply Wicked
- Sin and the Preacher's Son
- Sin corazón
- Sin miedo al escándalo (Solteros y truhanes 1)
- Sin Secretos
- Sinagiri
- Sinan Silvius Silva, Proconsul
- Sincerely Yours
- Sinews of History: Feminine Power Through the Ages
- Sinful (Hot Regency Romance Novella)
- Sinful (Regency Scandal 4)
- Sinful Hearts
- Sinful in Satin
- Sinful Passions
- Sinful Seduction
- Sinful Treasure
- Sinfully Ever After
- Sing
- Sing for Me One More Time
- Singapore and the Supernatural
- Singing From the Heart
- Single Spark
- Sinistre compagnie
- Sinisukka
- Sinjin
- Sinners and Saints
- Sinnliche Märchen: Die Komplette Kollektion
- Sinnliche Märchen: Reihe in 3 Bänden: Band 1
- Sino al confine
- Sins of a Duke
- Sins of Summer
- Sins of the Heart
- Sins of the Highlander
- Sins of the Sister I: Genesis, A Romance Novel
- Sir Ashley's Mettlesome Match
- Sir Dagonet, the Gentle Giant
- Sir Gawain and the Green Knight
- Sir Gawayne and the Green Knight
- Sir George Tressady (Vol.1&2)
- SIR GIBBIE & DONAL GRANT: The Baronet's Song and The Shepherd's Castle (Adventure Classic)
- Sir Harry: A Love Story
- Sir Isumbras at the Ford
- Sir Michael's Mayhem
- Sir Quixote of the Moors - Being Some Account of an Episode in the Life of the Sieur de Rohaine
- Sir Thomas Malory's Morte Darthur
- Sir Tristan’s Estate
- Siren of the Sea
- Siren Song
- Siren's Call
- Sisi – Kaiserin wider Willen
- Sissi - Der Schicksalsweg einer Kaiserin 2
- Sissy
- Sister Carrie
- Sister Royal
- Sisters
- Sisters in Service Ominbus Edition
- Sisters Inn
- Sisters of Icarus
- Sisters of Mercy Flats
- Sisters of the Secret Conspiracy
- Sisters of War
- Sisters, West!
- Sitt hjärtas fånge
- Sitti Nurbaya
- Sitting on the Branch of an Olive Tree
- Six Images of Summer
- Six Sisters of Shame
- Six Weeks with a Lord
- Sixties (Book 6 of The Poppy Chronicles)
- Sixty Acres and a Bride (Ladies of Caldwell County Book #1)
- Sixty-Six Chances
- Sizzle All Day
- Skandal im Ballsaal