The Italian star won't be able to take part in the upcoming instalment of the competition, while also featuring on US version Dancing With The Stars.
Du Beke, 54, said of his new role: "My loves I cannot tell you how thrilled I am to be stepping into Bruno’s brogues for the next series of Strictly.
“It’s a dream come true to be judging alongside the best of the best and I promise to be kinder to all the couples than any of them have ever been to me.”
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Meanwhile, Tonioli jokingly added: "Whilst I am gutted to not be on the show this year there is one person and one person only that could take my place – it’s just a shame they weren’t available... haha!”
He went on: “Darlings I’m kidding, I’m kidding! Seriously though, I have to tell you, Anton is Mr Strictly and if anybody is filling in for me, it has to be him.
“I honestly wouldn’t have it any other way and I am so excited to see him waggle his paddle.”
Du Beke has featured as a professional dancer on every season of the competition since it began in 2004, though is yet to win the show.
He had his first taste of the judging panel last year as he filled in for Motsi Mabuse while she was absent from the panel for two weeks.
Du Beke will be on the panel with Mabuse, Head Judge Shirley Ballas and Craig Revel Horwood.
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