- I Am Never Alone
- I Am Not A Serial Killer: Now a major film
- I Am Not Esther
- I Am Number Four: The Lost Files: Five's Betrayal
- I Am Number Four: The Lost Files: Five's Legacy
- I Am Number Four: The Lost Files: Hidden Enemy
- I Am Number Four: The Lost Files: Nine's Legacy
- I Am Number Four: The Lost Files: Return to Paradise
- I Am Number Four: The Lost Files: The Fallen Legacies
- I Am Number Four: The Lost Files: The Forgotten Ones
- I Am Number Four: The Lost Files: The Fugitive
- I Am Number Four: The Lost Files: The Guard
- I Am Number Four: The Lost Files: The Last Days of Lorien
- I Am Number Four: The Lost Files: The Legacies
- I Am Number Four: The Lost Files: The Navigator
- I Am Number Four: The Lost Files: The Search for Sam
- I am Winter
- I Can Be Your Friend
- I Can't Go Home Because of the Ghosts: Mom and Dad Said So A Children's Ghost Story
- I Dare You to Break Curfew
- I Don't Want To Kill You
- I fell in love with Cupid
- I Have No Secrets
- I Heart You, You Haunt Me
- I hunt killers
- I Know When You're Going To Die
- I Live In Your Basement (Goosebumps #61)
- I Livellatori
- I Must Betray You
- I Saw Mommy Biting Santa Claus
- I So Don't Do Mysteries
- I So Don't Do Spooky
- I Spy With My Little Eye...
- I Vivi, i Morti e gli Altri
- I Was A Teenage Necromancer
- I was a Teenage Vegetarian Zombie Detective
- I Woke Up Dead at the Mall
- I'm Not Who You Think I Am
- I'm with the Banned
- Icari
- Iceas' Victory
- Ich bin Nummer Vier
- Ici se cachent les monstres
- If It Haint Broke
- If You Find Me
- Ignite
- Ignite (Midnight Fire Series Book One)
- Ignite: Book II of the Hollowstone Chronicles
- Ignition
- Ikot (Unang libro sa Talaarawan ng Bampira)
- Illegal
- Illuminate
- Illuminatus (The Girl in the Leather Jacket, #2)
- Illusion
- Im Herzen der Zorn
- Im Herzen die Gier (Furien-Trilogie Band 3)
- Im Herzen die Rache (Furien-Trilogie Band 1)
- Imm Tricks (The Presenting Saga Book 2)
- Imminence
- Immortal Beloved (Book 2 of The Knight Trilogy)
- Immortal Darkness
- Immortal: The Chosen
- IMPERFECT ORB
- Imposter
- Impostor
- In den Fängen des Seemonsters
- In Dreams
- In fuga
- In My Mind's 'I'
- In Real Life
- In the Afterlight (The Darkest Minds, Book 3)
- In the Arms of Stone Angels
- In The Between
- In the Blood (Book #2 in the Vampire's Witch Saga)
- In the Dark of Light
- In the Dark, In the Woods
- In The End: The complete series
- In the Garden of Memories
- In the Land of the Lawn Weenies
- In the Service of Samurai
- In The Shadows
- In The Time of the Wolves
- In the Woods
- In The Woods + Bonus Prequel 2nd Edition
- In Time (The Darkest Minds, Book 1.5)
- Inbetween
- Incinerator
- Incite
- Indestructible
- Indian Ghost Stories
- Indigo Awakening
- Indigo Donut
- Infection
- Inferno
- Infinite
- Infinite Risk
- Infinitely Intertwined
- Infinity Reaper
- Infinity Son
- Inframundo
- Infusion
- Inheritance
- Ink Exchange
- Inner Demons
- Innocenti Spiriti