•
Eddie Izzard as
Long John Silver, formerly Captain Flint's quartermaster and latterly landlord of the Spyglass Inn, cook on the
Hispaniola, and leader of the mutineers. In this adaptation he loses his leg after Flint fires a cannon at his crew to get them off the ship. •
Philip Glenister as
Captain Smollett, captain of the
Hispaniola •
Rupert Penry-Jones as
Squire John Trelawney, the leader of the expedition, a greedy, stupid man who betrays his comrades. Rather different from his portrayal in the book, in which he is something of a buffoon but is described as "the most liberal of men". •
Toby Regbo as
Jim Hawkins, son of the proprietors of the Admiral Benbow inn and the ''Hispaniola's'' cabin boy •
Daniel Mays as
Dr. David Livesey, the ship's doctor, an old friend of Jim's parents. A former army surgeon who fought at
Fontenoy, in the book he is always sensible and brave, but in this adaptation is initially something of a coward (though he later proves to be quite brave). •
Reda Kateb as Dujon, the second mate of the
Hispaniola. Dujon was invented for this adaptation. •
Donald Sutherland as
Captain Flint, a legendary pirate. Flint does not appear in the book, but is only spoken of. In this adaptation he appears in a prologue. •
Elijah Wood as
Ben Gunn, a former member of Flint's crew marooned on Treasure Island three years before after he persuaded his crewmates on another ship to search for the treasure. When they could not find it, they left him there. In this adaptation, he is portrayed as a Yankee, although this is not specified in the book. •
David Harewood as
Billy Bones, formerly Flint's first mate, who precipitates the whole adventure by dying in the Admiral Benbow inn. In this adaptation he is portrayed as Jamaican. •
Julian Barratt as Redruth. In the book, Tom Redruth was Trelawney's elderly gamekeeper and accompanied the expedition to Treasure Island, where he was killed. In this adaptation, he is Trelawney's ruthless agent; he remains in England, where he repossesses the Admiral Benbow from Meg Hawkins. •
Shirley Henderson as Meg Hawkins, Jim Hawkins' mother, recently widowed landlady of the Admiral Benbow inn. Her first name is not given in the book. •
Nina Sosanya as Alibe Silver, Silver's wife, who flees to the Admiral Benbow to get away from Black Dog and befriends Meg Hawkins. The character has essentially been invented for this adaptation, although the book does state that Silver has an (unseen) wife, a "woman of colour" whom he leaves in charge of his inn. •
Geoff Bell as
Israel Hands, formerly Captain Flint's gunner, later a crewman on the
Hispaniola and one of the leaders of the mutineers. In the book he serves as the ''Hispaniola's'' coxswain and is described as a good seaman, but in this adaptation this role has been taken over by Abraham Gray and Silver says that Hands is a poor seaman (although a good gunner). •
Shaun Parkes as George Merry, a former member of Flint's crew and boatswain (and later mate) of the
Hispaniola and a mutineer. In the book he is a simple crewman (although also a former member of Flint's crew) and leads the discontent against Silver's leadership. •
Keith Allen as Blind Pew, a former member of Flint's crew, now a blind beggar •
Sean Gilder as Black Dog, a former member of Flint's crew •
Barnaby Kay as Tom Morgan, a former member of Flint's crew and later of ''Hispaniola's'' and a mutineer. He is described in the book, in which he was also a member of Flint's crew, as elderly and "mahogany-faced" (although it is not specified whether this means he is heavily tanned or black). • Clinton Blake as Freddie Arrow, the ''Hispaniola's'' first mate. In the book he is the only mate, an appalling officer who disappears one night (presumably fallen overboard while drunk), but in this adaptation (in which he is portrayed as Jamaican) he dies after being keel-hauled by Trelawney after striking him (also while drunk). He is not given a first name in the book. •
Tom Fisher as Abraham Gray, the ''Hispaniola's''
coxswain and the only survivor among the seamen who refuse to join the mutineers. In the book, Gray (the carpenter's mate, not the coxswain, as Hands holds that position) initially joins the mutineers, but then defects after Captain Smollett appeals to his better nature. •
Madhur Mittal as Dick Johnson, a young former member of Flint's crew and later a crewman on the
Hispaniola and one of the mutineers. In the book, Johnson is the youngest hand on the
Hispaniola and is persuaded to join the mutiny by Silver. He is not a former member of Flint's crew. •
David Wilmot as William O'Brien, one of the mutineers. His first name is not given in the book. •
Chu Omambala as Job Anderson, one of Flint's crew who later serves on the
Hispaniola. In the book he is the ship's boatswain and effectively takes over as mate after Arrow disappears, but in this adaptation this role has been taken over by George Merry. The book does not say whether or not he was a member of Flint's crew. • Lorenzo Grozco as Allardyce, one of Flint's crew who helps him bury his treasure and whose skeleton is later used as a pointer by Flint. • Alfredo Salgado as Jeremiah Darby, one of Flint's crew who helps him bury his treasure. He is not named in the book. •
Ruaidhri Conroy as John Hunter, one of Trelawney's servants, who accompanies the expedition and is killed on Treasure Island. • Mal Whyte as Richard Joyce, Trelawney's valet, who accompanies the expedition and is killed on Treasure Island. •
Tom Wu as Joe Thoby, a Chinese seaman on the
Hispaniola who refuses to join the mutiny, whereupon Silver kills him. In the book this is a man named Tom, an old friend of Silver's. • Damien Hannaway as Alan Tab, a crewman of the
Hispaniola killed by the mutineers after he refuses to join them. His surname is not given in the book. • Siobhan O'Kelly as Mrs Livesey, now deceased and only appearing in flashback • Tommy O'Neill as Salt ==Reception==