| Adams, William
English navigator who is believed to be the first Briton to reach Japan, becoming a key naval advisor to Tokugawa Ieyasu. |  England
- Captain Ahab, fictional character and hero of Herman Melville's novel Moby-Dick
- Captain Jack Aubrey, hero of the Aubrey–Maturin series by Patrick O'Brian
- John Blackthorne, hero of James Clavell's 1975 novel Shōgun, based on William Adams
- Captain Birdseye, advertising mascot for the Birds Eye frozen food brand
- Cap'n Crunch, mascot character for the cereal of the same name
- Captain Gault, sea captain of a number of stories by English writer William Hope Hodgson
- Captain Haddock, captain in the comic album series The Adventures of Tintin
- Captain James Hook, captain in the play and novel Peter Pan
- Horatio Hornblower, protagonist of a series of novels by C. S. Forester
- Captain Jat, sea captain of a number of stories by English writer William Hope Hodgson
- Captain Horatio McCallister, recurring character from the TV series The Simpsons
- Captain Nemo, a submarine captain first introduced in Jules Verne's Twenty Thousand Leagues Under the Seas
- Captain Pugwash, captain of pirate ship in a cartoon of the same name
- Captain Alexander Smollett, the captain of the schooner Hispaniola in Robert Louis Stevenson's Treasure Island.
- Captain Jack Sparrow, captain of the pirate ship Black Pearl in Pirates of the Caribbean films
- Cap'n Turbot, a character in the Canadian TV series ''PAW Patrol''
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