| Type: | Under-21 |
| Year: | 1970 |
| Dates: | 19 April 1970 – 1 November 1970 |
| Teams: | 15 |
| Munster: | Cork |
| Leinster: | Wexford |
| Ulster: | Antrim |
| Matches: | 15 |
| Team: | Cork |
| Titles: | 4th |
| Captain: | Teddy O'Brien |
| Team2: | Wexford |
| Captain2: | Liam Bennett |
| Topscorer: | Mick Butler (6-30) |
| Previous: | 1969 |
| Next: | 1971 |
The 1970 All-Ireland Under-21 Hurling Championship was the 7th staging of the All-Ireland Under-21 Hurling Championship since its establishment by the Gaelic Athletic Association in 1964.
Cork entered the championship as the defending champions.
On 1 November 1970, Cork won the championship following a 5-17 to 0-8 defeat of Wexford in a replay of the All-Ireland final.[1] This was their 4th All-Ireland title in the grade and their third in succession.
Wexford's Mick Butler was the championship's top scorer with 6-30.
In keeping with their senior and minor teams, Galway's under-21 hurlers left the Munster Championship where they had been playing since 1964. Having no competition in their own province, Galway received a bye to the All-Ireland semi-final stage.
Quarter-finals
Semi-finals
Final
First round
Semi-finals
Final
Final
Semi-finals
Finals
| Rank | Player | Club | Tally | Total | Matches | Average |
|---|---|---|---|---|---|---|
| 1 | Mick Butler | Wexford | 6-30 | 48 | 5 | 9.60 |
| 2 | Paddy Ring | Cork | 4-18 | 30 | 4 | 7.50 |
| 3 | Martin Casey | Wexford | 3-11 | 20 | 5 | 4.00 |
| 4 | Liam O'Brien | Kilkenny | 4-06 | 18 | 3 | 6.00 |
| 5 | Timmy Delaney | Tipperary | 3-07 | 16 | 2 | 8.00 |
| 6 | Connie Kelly | Cork | 2-09 | 15 | 2 | 7.50 |
| 7 | Martin Quigley | Wexford | 2-07 | 13 | 5 | 2.60 |
| 8 | Jimmy Barrett | Cork | 3-03 | 12 | 4 | 3.00 |
| Jim McNamara | Clare | 1-09 | 12 | 2 | 6.00 | |
| 10 | Paul Byrne | Tipperary | 3-02 | 11 | 2 | 5.50 |
| Barry Murphy | Wexford | 3-02 | 11 | 5 | 2.20 | |
| Kevin McSweeney | Cork | 1-08 | 11 | 5 | 2.20 |
| Rank | Player | Club | Tally | Total | Opposition |
|---|---|---|---|---|---|
| 1 | Connie Kelly | Kilkenny | 2-07 | 13 | Wexford |
| Mick Butler | Wexford | 1-10 | 13 | Cork | |
| 3 | Liam O'Brien | Kilkenny | 2-06 | 12 | Westmeath |
| Martin Casey | Wexford | 2-06 | 12 | Galway | |
| 5 | Mick Butler | Wexford | 3-02 | 11 | Laois |
| Paul Byrne | Tipperary | 3-02 | 11 | Limerick | |
| Barry Murphy | Wexford | 3-02 | 11 | Galway | |
| 8 | Timmy Delaney | Tipperary | 2-04 | 10 | Cork |
| Mick Butler | Wexford | 1-07 | 10 | Kilkenny | |
| Paddy Ring | Cork | 1-07 | 10 | Tipperary | |
| Mick Butler | Wexford | 1-07 | 10 | Galway |