| All Ireland Champions | |
|---|---|
| Winners | Tipperary (7th win) |
| All Ireland Runners-up | |
| Runners-up | Offaly |
| Provincial Champions | |
| Munster | Tipperary |
| Leinster | Offaly |
| Ulster | Antrim |
| Connacht | Not Played |
|
← 1988
1990 →
|
|
The 1989 All-Ireland Under-21 Hurling Championship was the 26th staging of the All-Ireland Under-21 Hurling Championship since its establishment by the Gaelic Athletic Association in 1964.
Cork were the defending champions, however, they were beaten by Tipperary in a Munster semi-final replay.
On 10 September 1989, Tipperary won the championship following a 4-10 to 3-11 defeat of Offaly in the All-Ireland final. This was their seventh All-Ireland title in the under-21 grade and their first in four championship seasons.