| All Ireland Champions | |
|---|---|
| Winners | Kilkenny (4th win) |
| Captain | Séamus Delahunty |
| All Ireland Runners-up | |
| Runners-up | Tipperary |
| Captain | Donal Kealey |
| Provincial Champions | |
| Munster | Tipperary |
| Leinster | Kilkenny |
| Ulster | Down |
| Connacht | Not Played |
← 1983 1985 → | |
The 1984 All-Ireland Under-21 Hurling Championship was the 21st staging of the All-Ireland Under-21 Hurling Championship since its establishment by the Gaelic Athletic Association in 1964.
Galway were the defending champions, however, they were beaten by Tipperary in the All-Ireland semi-final.
On 22 August 1984, Kilkenny won the championship following a 1-12 to 0-11 defeat of Tipperary in the All-Ireland final.[1] This was their fourth All-Ireland title in the under-21 grade and their first in seven championship seasons.