Her role covers both the Daily Telegraph's and the overall digital strategy of the group.
Murdoch MacLennan, Telegraph Group chief executive, said: "Annelies has a proven track record in the development and innovation of online publishing. She will be a fantastic addition to our senior team."
The Telegraph's digital operations had been led by Hugo Drayton until he was promoted to managing director in November 2003. He left the company last October in the first of the senior management changes by the Barclay brothers, who acquired the Telegraph in the summer.
Before joining News International, Van den Belt was publisher of The Moscow Times, Russia Business Review and The St Petersburg Times.
In 1997, she launched the Russian edition of Men's Health and was also responsible for Playboy in Moscow. She previously worked for Johnson & Johnson in Russia and Eli Lilly in The Netherlands.
"It's really exciting to be joining the new team of executives at the Telegraph Group. Digital is pivotal to building the commercial future of the company and should be an integral part of the commercial and overall publishing operation," she said.
Van den Belt was promoted to deputy ad director to replace Mathew Watkins who was named ad director at Times Newspapers last April and retained her responsibility for Times Online and overall digital strategy.
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