The Rebels scored three goals in their one point victory
Cork are Eirgrid Munster under-21 football champions.
The Rebels beat rivals Kerry in tonight's decider at Austin Stacks Park, Tralee.
There was only a point in it as goals became crucial with Cork advancing by a 3-9 to 1-14 score.
Brian Coakley, Sean Powter and Sean White got those three Cork goals as they advance to take on newly-crowned Ulster champions Monaghan in the All-Ireland semi-finals.
Cork's Michael McSweeney falls as he takes his position for the team photo ©INPHO/Ryan Byrne
Kerry's Gavin White and Ryan Harkin of Cork ©INPHO/Ryan Byrne
Kerry's Jack Savage and Kieran Histon of Cork ©INPHO/Ryan Byrne
Kerry's Dara Roche celebrates a score ©INPHO/Ryan Byrne