The French tactician takes over Roy Hodgson, who left the club when his contract expired at the end of last season.
Vieria, who was last in charge of OGC Nice, has put pen-to-paper on a three year deal with the Premier League club.
“I am really excited to have this opportunity to return to the Premier League, and manage this great football club, as we begin a new chapter together," he told the club's official website.
“It is a project that is really appealing to me, having spoken a lot with the Chairman and Sporting Director about their ambition and plans for the whole club, including the Academy. The club has fantastic foundations in place after many years in the Premier League, and I hope we can make further improvements and continue to drive the club forward.
“I am also very excited to experience the atmosphere the club’s supporters make at Selhurst Park and away from home too, and I know just how important that can be for the team.”
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