[1] In Stevenson's book, Flint, whose first name is not given, was the captain of a pirate ship, Walrus, which accumulated an enormous amount of captured treasure, approximately £700,000.

Flint has a major part in the 1924 prequel Porto Bello Gold, by A. D. Howden Smith, which describes how the treasure was captured from a Spanish galleon.

In this version, Flint is described as having started his piracy career as the junior partner of Andrew Murray, an idealistic Jacobite turned pirate, who is not referenced in Stevenson's original book.

"[3] In Arthur Ransome's book Swallows and Amazons, the Blacketts' uncle James Turner is nicknamed Captain Flint by the Walkers.

[4] Flint appears briefly in the Soviet comedy adaptation Return to Treasure Island in some live-action scenes, although not in the "main story" hand-drawn part.

In this film, the character was voiced by Peter Cullen and known as Nathaniel Flint, a space pirate of non-human origins whose reputation was legendary for leading his ship and his crew to plunder merchant ships, infamously appearing and disappearing without a trace, and eventually burying his treasure (called by many "Flint's Trove" and/or "the loot of a thousand worlds") inside the giant alien mechanism known as Treasure Planet.

Set roughly two decades before the events of Treasure Island, the 2014 televised series Black Sails follows the adventures of Captain Flint and his pirate crew.

Episodes "IX" and "XIII" further reveal that he is a disgraced former Royal Navy lieutenant named James McGraw, dismissed from service for falling in love and having an affair with Lord Thomas Hamilton and his wife.

He was exiled from England with Thomas' wife, Miranda Barlow, who had since hidden herself as a lowly Puritan lady on the trading island of New Providence.