2008 All-Ireland Under-21 Football Championship
| Championship details | |
|---|---|
| All-Ireland Champions | |
| Winning team | Kerry (10th win) |
| Captain | Killian Young |
| Manager | Seán Geaney |
| All-Ireland Finalists | |
| Losing team | Kildare |
| Captain | Gary Whyte |
| Manager | Glenn Ryan |
| Provincial Champions | |
| Munster | Kerry |
| Leinster | Kildare |
| Ulster | Down |
| Connacht | Mayo |
The 2008 All-Ireland Under-21 Football Championship was the 45th staging of the All-Ireland Under-21 Football Championship since its establishment by the Gaelic Athletic Association in 1964.
Cork entered the championship as defending champions, however, they were defeated by Kerry in the Munster semi-final.
On 3 May 2008, Kerry won the championship following a 2-12 to 0-11 defeat of Kildare in the All-Ireland final. This was their 10th All-Ireland title overall and their first in ten championship seasons.