Ian Lancaster Fleming (28 May 1908 – 12 August 1964) was a British writer, journalist and naval intelligence officer who is best known for his James Bond series of spy novels. Fleming came from a wealthy family connected to the merchant bank Robert Fleming & Co., and his father was the Member of Parliament (MP) for Henley from 1910 until his death on the Western Front in 1917. Educated at Eton, Sandhurst, and, briefly, the universities of Munich and Geneva, Fleming moved through several jobs before he started writing.

While working for Britain's Naval Intelligence Division during the Second World War, Fleming was involved in planning Operation Goldeneye and in the planning and oversight of two intelligence units, 30 Assault Unit and T-Force. His wartime service and his career as a journalist provided much of the background, detail and depth of the James Bond novels.

Fleming wrote his first Bond novel, Casino Royale, in 1952. It was a success, with three print runs being commissioned to cope with the demand. Eleven Bond novels and two collections of short stories followed between 1953 and 1966. The novels revolve around James Bond, an officer in the Secret Intelligence Service, commonly known as MI6. Bond is also known by his code number, 007, and was a commander in the Royal Naval Volunteer Reserve. The Bond stories rank among the best-selling series of fictional books of all time, having sold over 100 million copies worldwide. Fleming also wrote the children's story Chitty-Chitty-Bang-Bang and two works of non-fiction. In 2008, The Times ranked Fleming 14th on its list of "The 50 greatest British writers since 1945".

In 1942 Fleming attended an Anglo-American intelligence summit in Jamaica and, despite the constant heavy rain during his visit, he decided to live on the island once the war was over. His friend Ivar Bryce helped find a plot of land where, in 1945, Fleming had a house built, which he named Goldeneye. The name of the house and estate where he wrote his novels has many possible sources. Fleming himself mentioned both his wartime Operation Goldeneye and Carson McCullers' 1941 novel Reflections in a Golden Eye, which described the use of British naval bases in the Caribbean by the American navy

Fleming had first mentioned to friends during the war that he wanted to write a spy novel, an ambition he achieved within two months with Casino Royale. He started writing the book at Goldeneye on 17 February 1952, gaining inspiration from his own experiences and imagination. He claimed afterwards that he wrote the novel to distract himself from his forthcoming wedding to the pregnant Charteris, and called the work his "dreadful oafish opus".

The novel centres on the exploits of James Bond, an officer in the Secret Intelligence Service, commonly known as MI6. Bond is also known by his code number, 007, and was a commander in the Royal Naval Reserve. Fleming took the name for his character from that of the American ornithologist James Bond, an expert on Caribbean birds and author of the definitive field guide Birds of the West Indies. Fleming, himself a keen birdwatcher, had a copy of Bond's guide, and later told the ornithologist's wife, "that this brief, unromantic, Anglo-Saxon and yet very masculine name was just what I needed, and so a second James Bond was born". Fleming based his creation on individuals he met during his time in the Naval Intelligence Division, and admitted that Bond "was a compound of all the secret agents and commando types I met during the war".

Fleming used his annual holiday at his house in Jamaica to write another Bond story. Twelve Bond novels and two short-story collections were published between 1953 and 1966, the last two (The Man with the Golden Gun and Octopussy and The Living Daylights) posthumously. Many of the names used in the Bond works came from people Fleming knew: Scaramanga, the principal villain in The Man with the Golden Gun, was named after a fellow Eton schoolboy with whom Fleming fought; Goldfinger, from the eponymous novel, was named after British architect Ernő Goldfinger, whose work Fleming abhorred; Sir Hugo Drax, the antagonist of Moonraker, was named after Fleming's acquaintance Admiral Sir Reginald Aylmer Ranfurly Plunkett-Ernle-Erle-Drax; Drax's assistant, Krebs, bears the same name as Hitler's last Chief of Staff; and one of the homosexual villains from Diamonds Are Forever, "Boofy" Kidd, was named after one of Fleming's close friends—and a relative of his wife—Arthur Gore, 8th Earl of Arran, known as Boofy to his friends.

For the first five books (Casino Royale, Live and Let Die, Moonraker, Diamonds Are Forever and From Russia, with Love) Fleming received broadly positive reviews. That began to change in March 1958 when Bernard Bergonzi, in the journal Twentieth Century, attacked Fleming's work as containing "a strongly marked streak of voyeurism and sado-masochism" and wrote that the books showed "the total lack of any ethical frame of reference". The article compared Fleming unfavourably with John Buchan and Raymond Chandler on both moral and literary criteria. A month later, Dr. No was published, and Fleming received harsh criticism from reviewers who, in the words of Ben Macintyre, "rounded on Fleming, almost as a pack". Lycett notes that Fleming "went into a personal and creative decline" after marital problems and the attacks on his work. Goldfinger had been written before the publication of Dr. No; the next book Fleming produced after the criticism was For Your Eyes Only, a collection of short stories derived from outlines written for a television series that did not come to fruition.

Fleming's books had always sold well, but in 1961 sales increased dramatically. On 17 March 1961, four years after its publication and three years after the heavy criticism of Dr. No, an article in Life listed From Russia, with Love as one of US President John F. Kennedy's 10 favourite books. Kennedy and Fleming had previously met in Washington. This accolade and the associated publicity led to a surge in sales that made Fleming the biggest-selling crime writer in the US. Fleming considered From Russia, with Love to be his best novel.

In June 1961 Fleming sold a six-month option on the film rights to his published and future James Bond novels and short stories to Harry Saltzman. Saltzman formed the production vehicle Eon Productions along with Albert R. "Cubby" Broccoli, and after an extensive search, they hired Sean Connery on a six-film deal, later reduced to five beginning with Dr. No (1962). Connery's depiction of Bond affected the literary character; in You Only Live Twice, the first book written after Dr. No was released, Fleming gave Bond a sense of humour that was not present in the previous stories.