F
- Fantasy Island
- Finnigan Island: the island where John Patterson and one of his friends washed up on during a big storm in the 1999 cartoon of For Better Or For Worse
- Flyspeck Island: from Curtis
- Isle of Fogg: The only one of the 23 (fictitious) Outcropp Islands off the west coast of Scotland to be inhabited. It features in San Sombrèro: A Land of Carnivals, Cocktails and Coups.
- Forsaken Fortress: An island in the Nintendo Gamecube game, The Legend of Zelda: The Wind Waker.
- Fibber Island – A made up island in a They Might Be Giants song.
Read more about this topic: List Of Fictional Islands