- Still Life with Tornado
- Still Waters
- Still With Me
- Stillwater
- Stingers
- Stir Me Up
- Stitches
- Stitches and Stones
- Stitches and Strings
- Stitching a Life
- Stoker Sisters 1: Daughters of Dracula
- Stoker Sisters 2: Angels and Hunters
- Stolen Car
- Stone Cold A thought provoking YA horror
- Stone Girl
- Stone of the Sea
- Stones for My Father
- Stoneway
- Stop in the Name of Pants!
- Stop Picking On Me
- Stop Pretending
- Stop the Presses!
- Storia di Ismael che ha attraversato il mare
- Storie di indifferenza
- Stories about Melissa
- Stories for Peace
- Stories from New York #3
- Stories from the Edge
- Stories on Scrolls
- Stories to Mend the World
- Storky
- Storm and the Silver Bridle
- Storm of Ash
- Storm Rising
- Storm the Earth
- Stormbreak
- Stormcaster
- Stormfront
- Storms
- Stormwalker
- Story Crush Teen Sampler
- Stotan!
- Stowaway
- Strade rotte
- Straight Punch
- Straight Talk: Drugs and Alcohol
- Straight Talk: Smoking
- Stranded
- Strange Angels
- Strange Fire
- Strange Girl
- Strange Lies
- Strange Relations
- Strange School, Secret Wish
- Strange Start
- Strange the Dreamer
- Strange Truth
- Strange Truth
- Stranger No More
- Stranger Than Fanfiction
- Stranger Things: Runaway Max
- Strangeville School Is Totally Normal
- Strawberry fields
- Strawberry Moon
- Strays Like Us
- Strażnik parku
- Streams in the Desert for Kids
- Street Love
- Street Notes
- Street Pharm
- Stress Can Really Get on Your Nerves
- Stress Sucks!
- Stretched Too Thin
- Strigăt De Onoare (Cartea 4 din Inelul Vrăjitorului)
- Strike
- Strike Two
- Strike Zone
- Strings Attached
- Stripes of the Sidestep Wolf
- Stripped
- Stromabwärts
- Strong As A Lion, Big As A Tree!
- Strong as Death
- Strong Inside (Young Readers Edition)
- Stronger, Faster, and More Beautiful
- Struck
- Struck By Lightning
- Strutting It!
- Stu Truly
- Stu Truly: First Kiss
- Stuart's Wall
- Stuck in Neutral
- Stuck in the 70's
- Stuck On Me
- Stuck With You
- Stuff That Scares Your Pants Off!
- Stuffed
- Stumped
- Stuntboy, in the Meantime
- Stupid Boy: The Beginning
- Stutter Boy
- Stuyvesant - A Franconia Story
- Suave aroma dos campos de lavanda
- Subject to Change
- Sublime
- Substance Abuse
- Suburban Dangers
- Subway Girl
- SUCCESS for Teens
- Successful Love: Navigating the 6 Phases of Love
- Such a Pretty Face
- Such Wicked Intent
- Suck It Up and Die
- Suckerpunch
- Sucktown, Alaska
- Sudden Fiction
- Sudden Impact
- Sueña bailando
- Sueño blanco
- Sueños en la gran manzana (Serie New York Academy 2)
- Sugar and Spice
- Sugar and Spice and Everything...What Else, Mom?
- Sugar and Spite
- Sugar Town Queens
- Sugar, Spice, and Sprinkles
- Suicide Notes
- Suicide Notes from Beautiful Girls
- Suite Dreams
- Suite for Human Nature
- Sul più bello
- Sully Messed Up
- Summer
- Summer Alone
- The Summer Series
- Summer and July
- Summer and the City
- Summer and the City Tie-in Edition
- Summer Apart
- Summer at Forsaken Lake
- Summer at Meadow Wood
- Summer Bucket List
- Summer by Summer
- Summer Crush
- Summer in the City
- Summer in the Invisible City
- Summer Island #3
- Summer Nights
- Summer of '89
- Summer of 94
- Summer of Lost and Found
- Summer of Love
- Summer of Salt
- Summer of Sloane
- Summer of Smoke: A Thing of Beauty I
- Summer of Stolen Secrets
- Summer of the Ancient
- Summer of the Geek
- Summer of the Swans, The (Puffin Modern Classics)
- Summer of Yesterday
- Summer Promise
- Summer Reading Classics Three-Book Collection
- Summer Romance
- Summer Showers
- Summer Skin
- Summer Snow
- Summer State of Mind
- Summer Undone
- Summer Unplugged
- Summer Unplugged: The Complete Series