| Championship details | |
|---|---|
| Dates | 22 February – 29 April 2017 |
| Teams | 31 |
| All-Ireland Champions | |
| Winning team | Dublin (5th win) |
| Captain | Cillian O'Shea Con O'Callaghan |
| Manager | Dessie Farrell |
| All-Ireland Finalists | |
| Losing team | Galway |
| Captain | Michael Daly |
| Manager | Gerry Fahy |
| Provincial Champions | |
| Munster | Kerry |
| Leinster | Dublin |
| Ulster | Donegal |
| Connacht | Galway |
| Championship statistics | |
| Player of the Year |  Aaron Byrne |
← 2016 | |
The 2017 All-Ireland Under 21 Football Championship was an inter-county gaelic football competition between 31 of the 32 counties of Ireland (Kilkenny did not participate). Provincial championships were held in Connacht, Leinster, Munster and Ulster with the winners progressing to the All-Ireland semi-finals.
This was the final year of the Under 21 football championship. Beginning in 2018, it was replaced by an Under 20 championship following a vote at the GAA congress on 26 February 2016.[1]
Dublin beat Galway by 2-13 to 2-7 in the final on 29 April.[2][3]
The competition was sponsored for the third time by EirGrid.
- ^ "Under-21 inter-county football changed to U20 at GAA Congress". RTE Sport. 26 February 2017. Retrieved 25 May 2017.
- ^ "In keeping with the times, Dublin have the final word against Galway". Irish Examiner. 1 May 2017. Retrieved 25 May 2017.
- ^ "2017 All-Ireland Under-21 Football Final: as it happened". The 42. 1 May 2017. Retrieved 25 May 2017.