Charles Cumming is a British writer of spy fiction. He was educated at Eton College (1985-1989) and the University of Edinburgh (1990-1994), where he graduated with 1st Class Honours in English Literature. The Observer has described him as "the best of the new generation of British spy writers who are taking over where John le Carré and Len Deighton left off".

In 1995, Charles Cumming was approached for recruitment by the United Kingdom's Secret Intelligence Service (MI6). A Spy By Nature, a novel partly based on his experiences with MI6, was published in 2001. The novel's hero, Alec Milius, is a flawed loner in his early 20s who is recruited by MI6 to sell doctored research data on oil exploration in the Caspian Sea to the Central Intelligence Agency (CIA).

In 2001, Charles Cumming moved to Madrid. His second novel, The Hidden Man (2003), tells the story of two brothers investigating the murder of their father, a former SIS officer, at the hands of the Russian mafia. The Hidden Man also examines the clandestine role played by SIS and the CIA during the Soviet war in Afghanistan.

Charles Cumming's third novel, The Spanish Game (2006), marks the return of anti-hero Alec Milius, who becomes involved in a plot by the paramilitary Basque nationalist organization ETA to bring down the Spanish government. The Spanish Game was described by The Times as one of the six finest spy novels of all time, alongside Tinker, Tailor, Soldier, Spy, Funeral in Berlin and The Scarlet Pimpernel.

Typhoon, published in 2008, is a political thriller about a CIA plot to destabilise China on the eve of the Beijing Olympics. The story spans the decade from the transfer of the sovereignty of Hong Kong in 1997 to present-day Shanghai. In particular, the author highlights the plight of the Uyghur Muslim population in Xinjiang, a semi-autonomous region of The People's Republic of China. The acclaimed novelist William Boyd described Typhoon as "a wholly compelling and sophisticated spy novel - vivid and disturbing - immaculately researched and full of harrowing contemporary relevance."

In March 2008, Charles Cumming published an interactive online story, The 21 Steps, as part of a Penguin We Tell Stories project. Readers follow the protagonist's travels through Google Maps. Cumming's novels have been translated into six languages. His work is published in the United States by St Martin's Press. In 2009, Cumming left Penguin to join Harper Collins. His fifth novel, The Trinity Six, a thriller about the Cambridge spies, is published in the United States in March 2011.