The Rebels defeated Galway in Semple Stadium last night.
Cork are the All Ireland under 20 hurling champions.
They beat Galway by 4-19 to 2-14 at Semple Stadium last night.
Padraig Power was the star of the show, scoring 1-5 from play.
It's back to back titles for the Rebels, who could also add the minor and senior All Ireland trophies by the end of the week.