The Canaries confirmed they also had a further option to keep the highly-rated 25-year-old at Carrow Road until 2017.
Ruddy, who was named in Roy Hodgson's England squad for Euro 2012 only for a broken finger to rule him out of the tournament, told the club's official website: "I'm delighted. I have never wanted to leave Norwich since I've been here.
"I've had a great two years so far, and I can't wait to be a part of it for the next four years."
