| Work | Description | Characters |
|---|---|---|
| How Clumsy You Are, Miss Ueno | Japanese manga series | 1 |
| How Clumsy You Are, Miss Ueno | Japanese anime television series | 1 |
| How I Met Your Mother | American sitcom series (2005–2014) | 4 |
| Howl's Moving Castle | 2004 Japanese animated film by Hayao Miyazaki | 2 |
| How Much For Just The Planet? | novel by John M. Ford | 5 |
| How the Grinch Stole Christmas! | 1957 children's book by Dr. Seuss | 2 |
| How to Get Away with Murder | 2014 American legal drama television series | 2 |
| How to Train Your Dragon | 2010 animated film directed by Dean DeBlois and Chris Sanders | 1 |
| How to Train Your Dragon | media franchise based on children's books | 1 |
| How to Train Your Dragon | novel series by Cressida Cowell | 2 |
| How to Train Your Dragon 2 | 2014 animated film directed by Dean DeBlois | 1 |
| How to Train Your Dragon: Homecoming | animated short film directed by Tim Johnson | 1 |
| How to Train Your Dragon: The Hidden World | 2019 film directed by Dean DeBlois | 1 |
| Hulk | 2003 US superhero film directed by Ang Lee | 1 |
| Hulk and the Agents of S.M.A.S.H. | television series | 1 |
| Hulk Vs | 2009 double feature film by Frank Paur, Sam Liu | 1 |
| Humpty Dumpty | nursery rhyme | 1 |
| Hunter × Hunter | 1999 Japanese anime television series | 9 |
| Hunter × Hunter | Japanese manga series | 22 |
| Hunter × Hunter | 2011 Japanese anime television series | 9 |
| Hunter × Hunter: Nen × Impact | 2025 video game | 1 |
| Hunters of Dune | 2006 novel by Brian Herbert and Kevin J. Anderson | 1 |
| Hush | 2016 psychological horror film directed by Mike Flanagan | 1 |
| Hyouka | Japanese anime television series | 3 |
| Hyrule Warriors | 2014 video game | 1 |
| I Am Mother | 2019 science fiction thriller film by Grant Sputore | 1 |
| I, Borg | episode of Star Trek: The Next Generation (S5 E23) | 6 |
| iCarly | American teen sitcom | 4 |
| Ice Age | 2002 animated film directed by Chris Wedge | 1 |
| Ice Age | film franchise | 1 |
| Ice Age 2: The Meltdown | 2006 video game | 1 |
| Ice Age: A Mammoth Christmas | 2011 animation film directed by Karen Disher | 1 |
| Ice Age: Collision Course | 2016 American 3D computer-animated family adventure film | 2 |
| Ice Age: Continental Drift | 2012 American animated film | 2 |
| Ice Age: Dawn of the Dinosaurs | 2009 American animated film | 2 |
| Ice Age: The Great Egg-Scapade | 2016 film by Ricardo Curtis | 1 |
| Ice Age: The Meltdown | 2006 American animated film directed by Carlos Saldanha | 2 |
| Ice Trap | Book by L.A. Graf, from 1992 | 5 |
| Idolish7 | Japanese media franchise | 1 |
| I Heard | 1933 film by Dave Fleischer | 1 |
| Iliad | epic poem traditionally attributed to Homer | 19 |
| I'll Be Glad When You're Dead You Rascal You | 1932 film by Dave Fleischer | 1 |
| Image in the Sand | episode of Star Trek: Deep Space Nine (S7 E1) | 15 |
| I'm Alan Partridge | BBC situation comedy | 1 |
| Imbalance | Book by V.E. Mitchell, from 1992 | 5 |
| Immaterial and Missing Power | video game | 2 |
| Immortal Coil | Book by Jeffrey Lang, from 2002 | 7 |
| Imperishable Night | Eighth game of the Touhou series, a bullet hell shoot-em-up. | 4 |
| Impossible Spell Card | 2014 video game | 1 |
| Imzadi | novel by Peter David | 7 |
| Inception | 2010 film directed by Christopher Nolan | 1 |
| Incident at Arbuk | Book by John Gregory Betancourt, from 1995 | 6 |
| Incident in Judea | 1991 television film directed by Paul Bryers | 1 |
| Incredible Hulk | 1962 comic book ongoing series | 1 |
| Incredibles 2 | 2018 American computer-animated superhero film | 3 |
| Indiana Jones 5 | 2022 adventure film directed by James Mangold | 1 |
| Indiana Jones and the Fate of Atlantis | 1992 computer game | 1 |
| Indiana Jones and the Infernal Machine | 1999 video game | 1 |
| Indiana Jones and the Kingdom of the Crystal Skull | 2008 action-adventure film directed by Steven Spielberg | 1 |
| Indiana Jones and the Last Crusade | 1989 action-adventure film directed by Steven Spielberg | 1 |
| Indiana Jones and the Last Crusade: The Graphic Adventure | 1989 computer game | 1 |
| Indiana Jones and the Staff of Kings | video game | 1 |
| Indiana Jones and the Temple of Doom | 1984 film by Steven Spielberg | 1 |
| Indiana Jones comic books | comic book series | 1 |
| Indiana Jones et le Temple du Péril | roller coaster at Disneyland Paris | 1 |
| Infection | Book by John Gregory Betancourt, from 1999 | 11 |
| Infinite Crisis | 2014 video game | 3 |
| Inglourious Basterds | 2009 film by Quentin Tarantino | 3 |
| Initial D | manga by Shūichi Shigeno and the television anime series | 1 |
| Injustice 2 | 2017 fighting game | 22 |
| Injustice: Gods Among Us | 2013 video game | 14 |
| Inquisition | episode of Star Trek: Deep Space Nine (S6 E18) | 5 |
| In Search of the Castaways | book by Jules Verne | 1 |
| Inside Job | American adult animation on Netflix | 2 |
| Inspector Gadget | animated TV series | 1 |
| Inspector Gadget | 1999 comedy film produced by Walt Disney Pictures | 1 |
| Inspector Gadget 2 | 2003 comedy film by Alex Zamm | 1 |
| Insurrection | 5 | |
| In Tempest's Wake | Book by Dayton Ward, from 2012 | 6 |
| Interdimensional Cable 2: Tempting Fate | episode of Rick and Morty (S2 E8) | 1 |
| Interspecies Reviewers | Japanese anime television series | 1 |
| Interspecies Reviewers | Japanese manga series | 1 |
| Interstellar | 2014 film by Christopher Nolan | 5 |
| In the Beginning | 2000 film directed by Kevin Connor | 1 |
| In the Hands of the Prophets | episode of Star Trek: Deep Space Nine (S1 E20) | 10 |
| In the Loop | 2009 film by Armando Iannucci | 1 |
| Into the Dark | episode of Avatar: The Last Airbender (S1 E4) | 1 |
| Into the Nebula | 6 | |
| Into the Void | Book by Peter David, from 1997 | 6 |
| Inu × Boku SS | Japanese manga series | 1 |
| Inuyasha | Japanese anime television series | 1 |
| Inuyasha | Japanese manga series | 3 |
| Invader Zim | comic book series | 2 |
| Invader Zim | Dark comedy animated series | 2 |
| Invincible | 3 | |
| Invincible (TV series) | American animated superhero drama web television series by Amazon | 3 |
| I, Q | novel by Peter David | 4 |
| Iron Man | 1968 comic book ongoing series | 1 |
| Iron Man | American animated television series from 1994–1996 | 1 |
| Iron Man | 2008 superhero film produced by Marvel Studios | 3 |