1975 All-Ireland Under-21 Football Championship
| Championship details | |
|---|---|
| All-Ireland Champions | |
| Winning team | Kerry (3rd win) |
| Captain | Kevin O'Donoghue |
| Manager | Mick O'Dwyer |
| All-Ireland Finalists | |
| Losing team | Dublin |
| Provincial Champions | |
| Munster | Kerry |
| Leinster | Dublin |
| Ulster | Antrim |
| Connacht | Mayo |
The 1975 All-Ireland Under-21 Football Championship was the 12th staging of the All-Ireland Under-21 Football Championship since its establishment by the Gaelic Athletic Association in 1964.
Mayo entered the championship as defending champions, however, they were defeated by Dublin in the All-Ireland semi-final.
On 12 October 1975, Kerry won the championship following a 1-15 to 0-10 defeat of Dublin in the All-Ireland final. This was their third All-Ireland title overall and their first in two championship seasons.