Darren Huckerby scored the winner against his former club as Norwich came from behind to heap further pressure on relegation threatened Leeds.
The visiting team took the lead when Jonny Howson, 18, steered a Robbie Blake cutback into the bottom corner.
But Dion Dublin equalised for Norwich with a right-footed strike after Youssef Safri crossed from the left.
Huckerby then raced beyond two defenders with 78 minutes gone before slipping the ball beyond Neil Sullivan.
Norwich manager Peter Grant:
"It's a massive three points, no doubt about that, at the moment I feel absolutely ecstatic.
"The lads made it difficult form themselves on the first half, and then we lost a bad goal, but I don't think there's any doubt that they deserved the win.
"In the second half we were brave, if at times a little naive, but we dug very deep to make sure we got the result we all wanted."
Leeds manager Dennis Wise:
"I was pleased with the lads, and I can't ask any more from them. If we keep performing like that I'm sure we'll be okay. This one is gone now and we've got to look forward.
"I think we need to win eight of our 16 remaining games and we've got some good looking matches coming up against teams around us. I'm still very confident."
Norwich: Marshall, Colin (Hughes 68), Dublin, Doherty, Lappin, Fotheringham, Safri, Etuhu, Croft (McVeigh 87), Brown (Martin 73), Huckerby.
Subs Not Used: Gallacher, Thorne.
Goals: Dublin 59, Huckerby 78.
Leeds: Sullivan, Richardson, Heath, Rui Marques, Armando Sa, Douglas, Nicholls (Tom Elliott 81), Howson, Thompson, Kandol (Moore 71), Blake.
Subs Not Used: Ankergren, Westlake, Foxe.
Goals: Howson 20.
Ref: K Friend (Leicestershire).