"Today's #FridayFeeling? how about LIT because everyone's fave host, @RyanSeacrest is officially BACK this season!," the show's Twitter feed said.
The network previously announced judges Luke Bryan, Katy Perry and Lionel Richie will be back on the panel.
Seacrest hosted the show when it ran 2002-16 on FOX and he returned in 2018 when it moved to ABC.
"American Idol has been my home for 17 seasons and I can't wait to return to the stage," said Seacrest in a statement. "It's the greatest gift to be able to play a part in discovering new talent with a franchise that has been such a relevant part of American culture for so many years."
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