| Year: | 2021 |
| Type: | Under-20 |
| Dates: | 1 July – 15 August 2021 |
| Teams: | 31 |
| Team: | Offaly |
| Titles: | 2nd |
| Captain: | Kieran Dolan |
| Manager: | Declan Kelly |
| Team2: | Roscommon |
| Captain2: | Colin Walsh |
| Manager2: | Liam Tully |
| Munster: | Cork |
| Leinster: | Offaly |
| Ulster: | Down |
| Connacht: | Roscommon |
| Matches: | 30 |
| Totalgoals: | 91 (3.03 per game) |
| Totalpoints: | 667 (22.23 per game) |
| Topscorer: | Jack Bryant (4–22) |
| Poty: | Jack Bryant |
| Previous: | 2020 |
| Next: | 2022 |
The 2021 All-Ireland Under-20 Football Championship was the fourth staging of the All-Ireland Under-20 Championship and the 58th staging overall of a Gaelic football championship for players between the minor and senior grades. The championship began on 1 July and ended on 15 August 2021.
Galway entered the championship as the defending champions, however, they were beaten by Mayo after a penalty shootout in the Connacht semi-final.[1] [2]
The final was played on 15 August 2021 at Croke Park in Dublin, between Offaly and Roscommon, in what was their first ever championship meeting. Offaly won the match by 1-14 to 1-11 to claim their second championship title overall and a first title since 1988.[3] [4] [5]
| Rank | Player | County | Tally | Total | Matches | Average |
|---|---|---|---|---|---|---|
| 1 | Jack Bryant | Offaly | 4-22 | 34 | 5 | 6.80 |
| 2 | Daire Cregg | Roscommon | 0-28 | 28 | 5 | 5.60 |
| 3 | James Fitzpatrick | Roscommon | 5-07 | 22 | 5 | 4.40 |
| Adam McDermott | Roscommon | 4-10 | 22 | 5 | 4.40 | |
| 5 | Seán O'Connor | Tipperary | 2-15 | 21 | 3 | 7.00 |
| 6 | Ben McGauren | Westmeath | 1-17 | 20 | 3 | 6.66 |
| 7 | David Buckley | Cork | 0-18 | 18 | 3 | 6.00 |
| 8 | Andrew Gilmore | Down | 2-08 | 14 | 4 | 3.50 |
| 9 | Fionn Murray | Dublin | 1-10 | 13 | 3 | 4.33 |
| Ben O'Carroll | Roscommon | 1-10 | 13 | 5 | 2.60 |
| Rank | Player | County | Tally | Total | Opposition |
|---|---|---|---|---|---|
| 1 | Ben McGauren | Westmeath | 1-10 | 13 | Kildare |
| 2 | Tom O'Connell | Waterford | 3-01 | 10 | Clare |
| Conor Corbett | Cork | 2-04 | 10 | Kerry | |
| Jack Bryant | Offaly | 2-04 | 10 | Cork | |
| David Buckley | Cork | 0-10 | 10 | Tipperary | |
| 6 | Donnach Swinburne | Monaghan | 3-00 | 9 | Donegal |
| Jack Duggan | Longford | 1-06 | 9 | Westmeath | |
| Daire Cregg | Roscommon | 0-09 | 9 | Leitrim | |
| 9 | Seán O'Connor | Tipperary | 2-02 | 8 | Cork |
| James Fitzpatrick | Roscommon | 2-02 | 8 | Sligo | |
| Jay Hughes | Louth | 2-02 | 8 | Longford | |
| Keelin McGann | Longford | 1-05 | 8 | Louth | |
| Shane Pettit | Wexford | 1-05 | 8 | Offaly | |
| Seán Jones | Monaghan | 0-08 | 8 | Down |