Jana Bennett, president of BBC Worldwide Networks, is to leave the company as part of a reorganisation.
Bennett has been in the role since last February after serving eight years as the director of BBC Vision, responsible for the corporation's TV channels.
The restructure will see BBC Worldwide's five global divisions reorganised into seven geographical regions.
Bennett will leave the company in the late autumn.
Originally brought in to oversee the global roll-out of the iPlayer, Bennett also introduced 13 channel services in countries including New Zealand and Thailand, as well as launching channels into new markets such as Brazil and Taiwan.
As president BBC Worldwide Networks & Global BBC iPlayer, she is currently responsible for BBC Worldwide's 33 channels across 100 countries.
Aside from a two-and-a-half-year stint running Discovery's TLC cable channel in the US, Bennett has spent almost all her career at the BBC having joined as a news trainee in 1979.
"I am delighted to have grown the BBC's international channel portfolio at a time when global markets are so highly competitive and to have brought quality British programmes and events to new audiences around the world," Bennett said.
"I would like to thank the talented and dedicated teams I have worked with and wish all the best to an exceptional organisation, while I look forward to bringing my experience to another area of international media."