| Championship details | |
|---|---|
| All-Ireland Champions | |
| Winning team | Mayo (3rd win) |
| All-Ireland Finalists | |
| Losing team | Down |
| Provincial Champions | |
| Munster | Cork |
| Leinster | Laois |
| Ulster | Down |
| Connacht | Mayo |
The 1966 All-Ireland Minor Football Championship was the 35th staging of the All-Ireland Minor Football Championship, the Gaelic Athletic Association's premier inter-county Gaelic football tournament for boys under the age of 18.
Derry entered the championship as defending champions, however, they were defeated by Down in the Ulster final.
On 25 September 1966, Mayo won the championship following a 1–12 to 1–8 defeat of Down in the All-Ireland final. This was their third All-Ireland title overall and their first title in 13 championship seasons.[1]
Quarter-Final
| 1966 Quarter-Final | Leitrim | Lost – Won | Roscommon | St. Coman's Park, Roscommon |
Semi-Finals
| 1966 Semi-Final | Mayo | 4-01 – 0-07 | Sligo | Markievicz Park, Sligo |
| 1966 Semi-Final | Galway | Lost – Won | Roscommon | St. Coman's Park, Roscommon |
Final
| 17 July 1966 Final | Mayo | 1-09 – 0-07 | Roscommon | MacHale Park, Castlebar |
Preliminary round
| 1966 Preliminary round | Kildare | 2-12 – 1-01 | Wicklow | Nowlan Park, Kilkenny |
| 1966 Preliminary round | Wexford | 3-12 – 0-07 | Wicklow | Páirc Uí Shíocháin, Gorey |
| 1966 Preliminary round | Carlow | 3-06 – 1-05 | Westmeath | St Conleth's Park, Newbridge |
| 1966 Preliminary round | Longford | 3-03 – 0-04 | Louth | Páirc Tailteann, Navan |
Quarter-Finals
| 1966 Quarter-Final | Meath | 1-04 – 0-08 | Wexford | Croke Park, Dublin |
| 1966 Quarter-Final | Offaly | 0-10 – 0-04 | Kildare | O'Moore Park, Portlaoise |
| 1966 Quarter-Final | Laois | 4-10 – 0-07 | Carlow | O'Moore Park, Portlaoise |
| 1966 Quarter-Final | Dublin | 4-02 – 3-09 | Longford | O'Connor Park, Tullamore |
Semi-Finals
| 1966 Semi-Final | Offaly | 2-10 – 1-06 | Longford | Páirc Tailteann, Navan |
| 1966 Semi-Final | Wexford | 3-01 – 2-05 | Laois | St. Patrick's Park, Enniscorthy |
Final
| 24 July 1966 Final | Laois | 1-10 – 0-07 | Offaly | Croke Park, Dublin |
Preliminary round
Quarter-Finals
| 1966 Quarter-Final | Antrim | 2-04 – 1-09 | Cavan | O'Neill Park, Dungannon |
| 1966 Quarter-Final | Tyrone | 1-18 – 0-07 | Armagh | Pairc Esler, Newry |
| 1966 Quarter-Final | Derry | 1-18 – 0-06 | Donegal | St. Brendan's Park, Birr |
Semi-Finals
| 1966 Semi-Final | Derry | 1-09 – 1-07 | Tyrone | Casement Park, Dungannon |
| 1966 Semi-Final | Down | 5-11 – 3-07 | Cavan | O'Neill Park, Dungannon |
Final
| 31 July 1966 Final | Down | 1-12 – 1-09 | Derry | Casement Park, Belfast |
Quarter-Finals
| 1966 Quarter-Final | Cork | 2-12 – 1-02 | Clare | Cusack Park, Ennis |
| 1966 Quarter-Final | Waterford | 4-05 – 1-02 | Tipperary | Fraher Field, Dungarvan |
Semi-Finals
| 1966 Semi-Final | Cork | 6-20 – 1-02 | Limerick | Fitzgerald Stadium, Killarney |
| 1966 Semi-Final | Kerry | 4-12 – 0-06 | Waterford | Fraher Field, Dungarvan |
Final
| 17 July 1966 Final | Kerry | 1-07 – 5-12 | Cork | Fitzgerald Stadium, Killarney |
Semi-Finals
| 21 August 1966 Semi-Final | Mayo | 5-06 - 2-06 | Cork | Croke Park, Dublin |
| 21 August 1966 Semi-Final | Laois | 2-08 - 1-11 | Down | Croke Park, Dublin |
| 27 August 1966 Semi-Final Replay | Laois | 2-04 - 3-08 | Down | Páirc Tailteann, Navan |
Final
| 25 September 1966 Final | Mayo | 1-12 - 1-08 | Down | Croke Park, Dublin |