1971 All-Ireland Under-21 Football Championship
| Championship details | |
|---|---|
| All-Ireland Champions | |
| Winning team | Cork (2nd win) |
| Captain | Séamus Looney |
| All-Ireland Finalists | |
| Losing team | Fermanagh |
| Provincial Champions | |
| Munster | Cork |
| Leinster | Offaly |
| Ulster | Fermanagh |
| Connacht | Mayo |
The 1971 All-Ireland Under-21 Football Championship was the eighth 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.
On 19 September 1971, Cork won the championship following a 3-10 to 0-3 defeat of Fermanagh in the All-Ireland final. This was their second All-Ireland title overall and their second in succession.