| Type: | Under-21 |
| Year: | 1977 |
| Munster: | Cork |
| Leinster: | Kilkenny |
| Ulster: | Down |
| Team: | Kilkenny |
| Titles: | 3rd |
| Captain: | Mickey Lyng |
| Team2: | Cork |
| Captain2: | Tom Lyons |
| Previous: | 1976 |
| Next: | 1978 |
The 1977 All-Ireland Under-21 Hurling Championship was the 14th staging of the All-Ireland Under-21 Hurling Championship since its establishment by the Gaelic Athletic Association in 1964.
Cork were the defending champions.
On 9 October 1977, Kilkenny won the championship following a 2-9 to 1-9 defeat of Cork in the All-Ireland final.[1] This was their third All-Ireland title in the under-21 grade and their first in two championship seasons.
Final
First round
Semi-finals
Final
Semi-finals
Final