- Iron Widow
- Iron Will
- Iron-Born: A Short Story
- Irona 700
- Ironblood
- Ironbound
- Ironclad Contract
- Ironclad Devotion
- Ironcrown Moon
- Ironhand (Taurin's Chosen, Book 2)
- Ironhand's Daughter
- Ironhelm
- Ironhollow
- Ironic Hearts (Faerie Believers 02)
- Ironic Sacrifice
- Ironmaster & Other Tales
- Irons in the Fire
- Irons In The Fire
- Ironskin
- Irontide
- Ironwolfe
- Ironwolfe: Book One of the Triads of Tir na n'Og
- Irony
- Iroshi
- Irr, irrer, normal?
- Irradié
- Irralie's Bushranger: A Story of Australian Adventure
- Irredeemable
- Irregulars
- Irren ist göttlich
- Irreplaceable Lover
- Irresistible Magic
- Irrevocable Midnight
- Irrlichtertanz
- Irrlichtkönigin
- Irvin
- Irvin. Synteza nadprzestrzeni
- Is It Wrong to Try to Pick Up Girls in a Dungeon? Familia Chronicle, Vol. 1 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? Familia Chronicle, Vol. 2 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 1 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 10 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 10 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 11 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 12 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 2 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 3 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 4 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 5 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 6 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 7 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 8 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 9 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 1 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 10 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 11 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 12 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 13 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 14 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 15 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 16 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 2 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 3 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 4 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 5 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 6 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 7 (light novel)
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 8
- Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 9 (light novel)
- Is There a Santa Claus?
- Is This Apocalypse Necessary?
- Is This Heaven?
- Is This Love
- Isaac Bickerstaff
- Isaac's Bible (A Flash Fiction Story)
- Isaac's Crossing
- Isabel's Tears
- Isabel (An Avant Champion Novelette)
- Isabella
- Isabella Learns To Be Thankful
- Isabella Learns to Share
- Isabella von Aegypten
- Isabelle and the Siren
- Isdraken
- Isegrims Tagebücher
- Isekai Rebuilding Project: Volume 1
- Isekai Rebuilding Project: Volume 2
- Isenborn 1 - Stein
- Isenborn 2 - Erz
- Isenborn 3 - Eisen
- Isenborn 4 - Stahl
- Isfolket tegneserie 1 - Forbannelsen
- Isfolket tegneserie 2 - Nattskygge
- Isfolket tegneserie 3 - Tistelen og rosen
- Isfolket tegneserie 4 - Vindens klage
- Ishtal
- Ishtar's Blade
- Ishura, Vol. 1
- Isilds vrede
- Isis
- Isis Orb
- Isis Wept
- Isis, Vampires and Ghosts: Oh My!
- Isis: All About the Goddess
- Isis: Death of a Theta
- Isis: My Sister, My Frenemy
- Isis: Night of the Vampires
- Isis: Samurai Goddess
- Isis: The Ultimate Fight
- Isis: Wrath of the Cybergoddess
- Iskallt
- Iskandar
- Iskandrien - Die ferne Insel
- Iskari - Der Sturm naht
- Iskari - Die gefangene Königin
- Iskari - Die Himmelsweberin
- Iskry Czasoświatu
- Iskry czasoświatu
- Iskìda della Terra di Nurak
- Isla's Wish
- Islam Folklore Prophet Jesus (Isa) Son of Mary & The Bird from Clay
- Islam Folklore Tales of Luqman The Wise Bilingual Edition English & Spanish