1982 All-Ireland Under-21 Football Championship
| Championship details | |
|---|---|
| All-Ireland Champions | |
| Winning team | Donegal (1st win) |
| Captain | Brian Tuohy |
| Manager | Tom Conaghan |
| All-Ireland Finalists | |
| Losing team | Roscommon |
| Manager | Martin McDermott |
| Provincial Champions | |
| Munster | Cork |
| Leinster | Laois |
| Ulster | Donegal |
| Connacht | Roscommon |
The 1982 All-Ireland Under-21 Football Championship was the 19th 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 Roscommon in the All-Ireland semi-final.
Donegal won the championship following an 0–8 to 0–5 defeat of Roscommon in the All-Ireland final. This was their fourth All-Ireland title overall and their second in successive seasons.
The following players won the Sam Maguire Cup with their county in 1992: Paul Carr, Matt Gallagher, Martin McHugh, Joyce McMullan, Sylvester Maguire, Anthony Molloy, Charlie Mulgrew and Donal Reid.