Roberts joins the Telegraph after working at the FT since 2000, where he held a number of business and City roles including industrial editor, US business editor and most recently in charge of Lombard.
Patience Wheatcroft, Sunday Telegraph editor, said: "Dan is a great acquisition for us. He is a brilliant, award-winning journalist and undoubtedly one of the stars of his generation."
Prior to joining the FT, Roberts worked on the business and City pages of the Daily Telegraph and the Birmingham Post. He is also a regular commentator on business and City issues on among others CNBC, CNN and Sky News.
Trefgarne has left the post after only nine months, having joined last October from the Daily Telegraph where he was economics editor.
It is not clear what his future plans are, with the Sunday Telegraph only saying that he has quit to "pursue other interests".
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