Hughton takes charge at Norwich
The 53-year-old Hughton replaces Paul Lambert after the Scot left to take charge of Aston Villa last weekend.
Hughton, a former Republic of Ireland international, leaves his position as manager of Championship side Birmingham City to step into the Carrow Road dugout.
He had previously been in charge of Newcastle United, leading the Magpies to promotion to the Premier League in 2010.
Norwich finished 12th in the Premier League in the season just finished, after Lambert previously led the Canaries to two consecutive promotions.
"As soon as the call came, due to the standing Norwich have, and their Premier League status, it was something that excited me," Hughton said.
"I'm very excited about the challenge ahead. It has all been done so suddenly and I am delighted to be here."
Hughton took Birmingham to fourth in the Championship last season but his team were knocked out in the play-off semi-finals by Blackpool.
"It was difficult to leave Birmingham," he added. "I had a very good year there and the supporters have been excellent with me.
"It's a wonderful club and I had a good relationship with the staff and the players so I'm grateful to them for allowing me to have this opportunity."