He'll be accompanied by his wife, Ayda, and Louis Tomlinson.
The three new judges appeared at a press conference in London where they were officially revealed.
Global superstar and ex Take That member Robbie has sold more than 75 million albums over his career and won 18 BRIT Awards - more than any other artist in history.
Now a married man, Robbie, 44, met Field in 2006 and they married three years later. A father-of-two, Robbie is no stranger to responsibility.
He's also part of the line up for charity campaign Soccer Aid.
For nearly 30 years I’ve been touring. I’ve been wanting to branch out and The X Factor felt like the perfect vehicle. Ayda is my rock, she’s looked after me through thick and thin. I’m looking forward to getting started as a judge!
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