- The Thin Executioner
- The Thin Line Between
- Thin Places
- Thin Rat and Fat Rat
- Thin Space
- Thin White Line
- The Thing About a "B"
- The Thing About Georgie
- The Thing About Jellyfish (National Book Award Finalist)
- The Thing About Leftovers
- The Thing About the Truth
- The Thing from Beyond the Stars
- The Thing in the Attic
- The Thing with Feathers
- The Thing You're Good At
- The Things a Brother Knows
- Things Are Gonna Get Ugly
- Things Before and After: How Technology has Improved Lives
- The Things Father Did Not Teach Us
- Things from Other Worlds
- Things Hoped For
- Things I Can't Forget
- Things I Don't Know
- Things I Know About Love
- Things I Should Have Known
- Things I Shouldn't Think
- Things I'll Know When I Grow Up
- Things I'll Never Say
- Things Jolie Needs to Do Before She Bites It
- The Things Owen Wrote
- Things Seen from Above
- The Things She's Seen
- Things That Are
- Things That Fall
- Things That Go - Boats Edition
- Things That Go - Buses Edition
- Things That Go - Planes Edition
- Things That Go - Trains Edition
- Things That Surprise You
- Things That Were, Things That Are, and Things That May Become
- The Things They've Taken
- Things to Build On
- Things to Make & Do
- Things Too Huge to Fix by Saying Sorry
- The Things We Can't Change Part Four: The Love Story
- The Things We Can't Change Part Three: The Healing
- The Things We Can't Change Part Two: The Struggle
- Things We Couldn't Say
- Things We Know by Heart
- Things You Can't Say
- Things You Didn't Know about the Renaissance Children's Renaissance History
- The Things You Kiss Goodbye
- Think Boy!
- Thinks and Things
- Thinspo
- The Third Act
- Third Charmed
- Third Chronicles of Illumination
- Third Circle
- The Third Class at Miss Kaye's - A School Story
- The Third Class at Miss Kaye's
- Third Daughter (The Royals of Dharia, Book One)
- The Third Floor
- The Third Gift
- Third Grade Book: I Love Science
- Third Grade Geography: Earthquakes and Volcanoes
- Third Grade's Terrible Trip
- The Third Horror
- The Third Kind of Magic
- The Third Lie's the Charm
- The Third Little Pet Book, with the Tale of Mop and Frisk
- The Third Mumbai
- The Third Mushroom
- The Third Officer
- THE THIRD OFFICER
- The Third Pig Detective Agency: The Complete Casebook
- The Third Pig Detective Agency
- The Third Power
- The Third Realm
- Third Strike
- Third Time's a Charmer
- The Third Twin
- Thirst
- The Thirst for Power
- Thirst No. 1
- Thirst No. 4
- Thirst No. 5
- The Thirsty Camel
- The Thirsty Sword
- Thirteen Chairs
- The Thirteen Colonies In The US : 3rd Grade US History Series
- Thirteen Days to Midnight
- Thirteen Doorways, Wolves Behind Them All
- Thirteen Gold Monkeys
- The Thirteen Little Black Pigs
- Thirteen Mercies, Three Kills
- Thirteen Plus One
- Thirteen Reasons Why
- Thirteen Rising
- Thirteens
- The Thirteenth Child
- The Thirteenth Door
- The Thirteenth Hour
- The Thirteenth Mystery (Hocus Pocus Hotel #3)
- The Thirteenth Princess
- THIRTY DAYS
- Thirty Minutes Under
- The Thirty Nine Steps
- Thirty Seconds To Die
- Thirty Strange Stories
- The Thirty-Nine Steps
- This Adventure Ends
- This Book Belongs To
- This Book Is Not Good For You
- This Book Is Not Yet Rated
- This Book Will (Help You) Change the World
- This Boy
- This Christmas Eve--A Christmas Tale
- This Coven Won't Break
- This Cow These Cows
- This Cruel Design
- This Crumbling Pageant
- This Cursed Flame
- This Cursed Shadow
- This Dance Is Doomed
- This Dark Endeavor
- This Darkness Mine
- This Endless Love
- This Fond Madness
- This Girl Can Shine Too
- This Girl Is Different
- This Girls First Car
- This Golden State
- This Heart of Mine
- This I Do For You
- This I've Learned
- This Impossible Light
- This Is 1808
- This Is a Quest Called Love, and We're All Pretty Lost
- This is a Tiger
- This Is All Your Fault
- This Is All Your Fault, Cassie Parker
- This Is as Good as It Gets
- This Is for Tonight