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- Haleakaloa: island in French Polynesia in the movie Donovan's Reef
- Harper's Island: Setting of the CBS horror/mystery series Harper's Island
- Haunted Isle: Setting of the Scooby-Doo, Where Are You! episode "Hassle in the Castle"
- Hedeby: Island in The Girl with the Dragon Tattoo book by Stieg Larsson, where Harriet Vanger disappeared
- Hili-li Island: an inhabited island near the South Pole in the novel A Strange Discovery by Charles Romeyn Dake. It is south of Tsalal.
- Hi-yi-yi: where Rhinogrades once lived
- Hippo Island: island in the South Pacific, of which King Hippo of the Punch Out!! series of video games is chief
- Hoenn
- Horai Island: a Chinese-owned artificial island used to generate hydroelectric power in the anime series Code Geass: Lelouch of the Rebellion, which later becomes the home base of the Black Knights.
- Huella Islands: footprint-shaped islands off the coast of Cayenne, mentioned in the Hardy Boys books. They are ruled by a dictator, Juan Posada and their "spy chief" is named Bedoya. The adjective is Huellan.
- Hydra Island: The second smaller Island off the coast of the main one in LOST
Read more about this topic: List Of Fictional Islands