H
- Haden (Falling Under by Gwen Hayes)
- Hades (Rick Riordan, Percy Jackson & the Olympians adventure fantasy series)
- Halfrek (Buffy the Vampire Slayer)
- Hannah Anafeloz (Kuroshitsuji)
- Har'lakk the Riftsplitter (RuneScape online role-playing game)
- Hastur (Cthulhu Mythos multiple-author fiction)
- Hastur (Neil Gaiman and Terry Pratchett, Good Omens)
- Hessian Horseman (Sleepy Hollow movie)
- Hellboy (Hellboy comic book series)
- Daimon Hellstrom (Marvel Comics), a.k.a. Hellstorm and Son of Satan
- Hell Knight (Doom video game series)
- Hezrou (Dungeons & Dragons fantasy game)
- Hiei (Yu Yu Hakusho)
- Him (The Powerpuff Girls)
- Hnikarr (Sarah Rees Brennan, The Demon's Lexicon
- Horace Pinker (Shocker)
- Hot Stuff the Little Devil (Harvey Comics)
- Hugh Crain (The Haunting)
- Hex (Kileigh, Special Demon)
- Hsi Wu (Jackie Chan Adventures TV series)
Read more about this topic: List Of Fictional Demons