| 1982 All-Ireland Under-21 Football Championship | |
| Bodyclass: | vevent |
| Headerstyle: | background:#BFD7FF; |
| Labelstyle: | white-space: nowrap |
| Datastyle: | white-space: nowrap |
| Header1: | Championship details |
| Label2: | Dates |
| Label3: | Teams |
| Header4: | All-Ireland Champions |
| Label5: | Winning team |
| Data5: | Donegal (1st win) |
| Label6: | Captain |
| Data6: | Brian Tuohy |
| Label7: | Manager |
| Data7: | Tom Conaghan[1] |
| Header8: | All-Ireland Finalists |
| Label9: | Losing team |
| Data9: | Roscommon |
| Label10: | Captain |
| Label11: | Manager |
| Data11: | Martin McDermott[2] |
| Header12: | Provincial Champions |
| Label13: | Munster |
| Data13: | Cork |
| Label14: | Leinster |
| Data14: | Laois |
| Label15: | Ulster |
| Data15: | Donegal |
| Label16: | Connacht |
| Data16: | 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.[3] 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.[4]