- Spin The Bottle
- Spiralling Out of Control (Book 1 in the Spiralling Trilogy)
- Spitfire!
- Splat!
- Split Decision
- Sports Camp
- Spot the Difference
- Spotlight
- Spotlight on Coding Club! #4
- Spring Break Mistake
- Sprinkles Before Sweethearts
- Spud in Winter
- Spud Sweetgrass
- Spurt
- Sputtanapoli Sport Nazionale Italiano
- Spy Girls Are Forever
- Squish #5: Game On!
- Squish #6: Fear the Amoeba
- Squish #7: Deadly Disease of Doom
- Squish #8: Pod vs. Pod
- Stable Groom
- Stable Manners
- Stable Witch
- Stagecoach
- Stained
- Stamped: Racism, Antiracism, and You
- Stand Beautiful
- Stand Beautiful Activity Kit
- Standing Up to Mr. O.
- Stanford Wong Flunks Big-Time (The Millicent Min Trilogy, Book 2)
- Stanley Will Probably Be Fine
- Star Darlings: A Wisher's Guide to Starland
- Star Darlings: Stealing Starlight
- Star Darlings: Good Wish Gone Bad
- Star in the Forest
- Star of the Show
- Star Power
- Star-Crossed
- Starfell 2-Book Collection, Volume 1
- Starfish Sisters
- Starlight Adventure
- Starring Sally J. Freedman as Herself
- Stars So Bright: Book of Constellations (Kiddie Edition)
- Stars So Sweet
- Start Here
- Starting with Alice
- State Ward
- Steal My Sunshine
- Steal This Country
- Stealing Freedom
- Stealing Home
- Stealing Indians
- Stealing Our Way Home
- Stealing Popular
- Stealing The Show
- Stef Soto, Taco Queen
- Stefan - Jenseits der Kindheit
- Steffi und Micha
- Steffis Party / Fahrtwind
- Steingesicht
- Stella by Starlight
- Step by Step
- Step Into Your Power
- Step Up
- Stepping into Traffic
- Stepping Out
- Stern des Himmels
- Stick Dog
- Stick Dog Tries to Take the Donuts
- Stick Your Neck Out
- Sticks & Stones (Upside-Down Magic #2)
- Sticky Notes
- Still Here
- Still Life
- Still Waters
- Stilles Vertrauen
- Stingers
- Stinky Sneakers Mystery (Cul-de-sac Kids Book #7)
- Stinky Spike and Me
- Stitch Head
- Stitch Head: The Ghost of Grotteskew
- Stitch Head: The Pirate's Eye
- Stitches
- Stitches and Stones
- Stolen
- Stonebird
- Stones in Water
- Stones of Time
- Stoney's Shadow
- Stone’s Throw Away
- Stop Bullying
- Storia d'agosto, di Agata e d'inchiostro
- Stories for Peace
- Storm Warning
- Stormwalker
- Stormy Waters
- Storybooth
- Storyteller
- Stowaway
- Straight Up
- Stranded
- Strange Birds
- Stranger in Dadland
- Stranger in Right Field
- Stranger With My Face
- Strangers Assume My Girlfriend Is My Nurse
- The Strays Like Us
- Street Duty, Case One: Knock Down
- Street Heroes
- Street of Dreams
- Street Shadows
- Streit um Legohr, sieben Löffel Pudding und andere Kindergeschichten
- Stress
- Stricken