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Declan Moore is to replace him by the end of the year.

Prior to joining the National Geographic Society in September 2001, Griffin was executive vice president and COO of Hearst Magazines International in New York. From 1990 to 2000 he was president of the magazine division at Rodale Inc, publisher of titles such as Prevention, Men's Health, Runner's World and Backpacker.

Moore has worked for NGS for the past fifteen years, most recently as international publisher of National Geographic magazines.

In his new role, Moore will be responsible for all editions of National Geographic, National Geographic Traveler, National Geographic Kids and National Geographic Little Kids magazines, as well as National Geographic Book Publishing, in all languages including English. 

In addition to Moore's appointment, Claudia Malley has been promoted to executive vice president and worldwide publisher for National Geographic Global Media.

Malley, who has overseen National Geographic's domestic publishing sales and marketing, will now have responsibility for all of National Geographic's worldwide magazine and digital media properties.

She joined National Geographic in 2003 as associate publisher of National Geographic magazine and was named US publisher in 2004. Malley was promoted to her most recent position in October 2009.

Executive vice president Terry Adamson, who has had overall responsibility for international publishing in non-English languages over the past decade, will continue in that role, working closely with Moore. Adamson and Moore will both report to Kelly.

NGS is a non-profit scientific and educational institution focused on work in geography, archaeology and natural science. NGS also publishes the society's official journal, stalwart magazine National Geographic, which is produced in 33 languages as well as English.

National Geographic was first published in October 1888 nine months after the NGS was founded. National Geographic recorded an ABC circulation of 309,567 from the six months to June 2010 in the UK and Ireland.

In 2001 the National Geographic Channel launched on cable and satellite television in the US.

Tim Kelly, president of National Geographic Global Media, said: "National Geographic has truly benefited from John Griffin's leadership these past nine years, and he leaves us well positioned for the future.

"Among his many contributions has been building a superb team, which includes two enormously talented executives in Declan and Claudia, who will help grow our global publishing effort across international and digital boundaries".