- S.O.N.O.
- S.O.S. from Outer Space
- Sam Samurai #10
- Sam the Incredible Inventor
- Sam the Man & the Cell Phone Plan
- Sarah Jane Adventures: The Nightmare Man
- Sascha Martin's Time Machine
- Satomi Caterpillar Makes A Change
- Save the Dream: March on Washington
- ScareScapes Book Five: End of Life Exams!
- ScareScapes Book Two: Systems Failure!
- Schatzsuche auf der Totenkopfinsel
- Sci-fi Shapes
- Science Candy
- Science Fair
- Science Fair Disaster!
- Scientist, Scientist, Who Do You See?
- Scott & Witty Wikky
- Search Wonder
- Secret of the Indian
- Secret Street
- See Otto
- See Pip Point
- See Santa Nap
- Shanghaied to the Moon
- Sharing Does Not Compute
- She's a Technology Sales Executive and She's My Mom
- Sherlock Sam and the Vanished Robot in Penang
- Shh! Bears Sleeping
- Shift
- Si yo diseñara un auto
- Silo the Seer
- Silver and Gold #3
- Sir Fig Newton and the Science of Persistence
- Sir_Scrap Metal
- Sixth-Grade Alien
- Skulduggery Pleasant - Books 1-9
- Skulduggery Pleasant: Books 1 - 12
- Skulduggery Pleasant: Books 10 - 12
- Skulduggery Pleasant: Books 4 – 6 The Death Bringer Trilogy
- Skulduggery Pleasant: Books 7 – 9: The Darquesse Trilogy
- Skulls!
- Sky High
- Sky Watcher #5
- Sleepover Scientist #3
- Slick
- Slime King
- Slinky Steps Out
- Slow Down, Sara!
- Snakes in Space
- Snatched from Earth
- Snow Globe Travelers: Samuel's Legacy
- Snow Place Like Home
- Snowball Run
- Snowbots
- Sol Invictus
- Solar Flare
- Solar System Amazing Space Adventure
- Solid, Liquid, Gassy! (A Fairy Science Story)
- Solids, Liquids, Guess Who's Got Gas?
- Solo A Star Wars Story Han on the Run (Enhanced Edition)
- Some Penguin Problems
- Someone Builds the Dream
- Sometimes I Forget You're a Robot
- Sommeil glacé
- Sophia Bird Loves Clouds
- Sophie Steps Up
- Sophie Under Pressure
- Space Ace
- Space Cadets: Moon Calling
- Space Camp
- Space Cat
- Space Cat Meets Mars
- Space Cat Visits Venus
- Space Dog
- Space Dogs
- Space Race
- Space Salad
- Space Station Vacation
- Space Taxi
- Space Taxi: Aliens on Earth
- Space Taxi: Archie's Alien Disguise
- Space Taxi: B.U.R.P. Strikes Back
- Space Taxi: The Galactic B.U.R.P.
- Space Taxi: Water Planet Rescue
- Spacebot
- Spacing Out!
- Spare Parts
- Spit, History, and Friendship
- Spork Out of Orbit (Book 1)
- Sprocket and the Sparrow
- Sprockets
- Standroid & Dandroid Make a Mess