The 1979 All-Ireland Under-21 Hurling Championship final was a hurling match that was played at O'Moore Park, Portlaoise on 23 September 1979 to determine the winners of the 1979 All-Ireland Under-21 Hurling Championship, the 16th season of the All-Ireland Under-21 Hurling Championship, a tournament organised by the Gaelic Athletic Association for the champion teams of the four provinces of Ireland.