1966 All-Ireland Senior Football Championship
The 1966 All-Ireland Senior Football Championship was the 80th staging of the All-Ireland Senior Football Championship, the Gaelic Athletic Association's premier inter-county Gaelic football tournament. The championship began on 1 May 1966 and ended on 25 September 1966.
Galway entered the championship as the defending champions in search of a third successive championship title.
On 25 September 1966, Galway won the championship following a 1–10 to 0–7 defeat of Meath in the All-Ireland final. This was their seventh All-Ireland title overall and their third championship in succession.
Fermanagh's P. T. Treacy was the championship's top scorer with 4–12. Galway's Mattie McDonagh was the choice for Texaco Footballer of the Year.
Connacht Championship format change
Normal system back with just 1 Quarter-final vs 2 Semi-finals as usual.Results
[Connacht Senior Football Championship]
Quarter-finalSemi-finals
'''Final'''
[Leinster Senior Football Championship]
First roundQuarter-finals
Semi-finals
'''Final'''
[Munster Senior Football Championship]
Quarter-finalsSemi-finals
'''Final'''
[Ulster Senior Football Championship]
Preliminary roundQuarter-finals
Semi-finals
'''Final'''
[All-Ireland Senior Football Championship]
Semi-finals'''Final'''
Championship statistics
Miscellaneous
- Cork stop Kerry to 9 Munster titles in a row in the Munster final.
- The All Ireland semi-final between Meath and Down was their first ever championship meeting.
- Galway were All Ireland Champions for the third year in a row and Connacht champions for the fourth year in a row.
Top scorers
;Overall| Rank | Player | County | Tally | Total | Matches | Average |
| 1 | P. T. Treacy | Fermanagh | 4–12 | 24 | 3 | 8.00 |
| 2 | Michael McLoone | Donegal | 3–14 | 23 | 3 | 7.66 |
| 3 | Cyril Dunne | Galway | 1–18 | 21 | 4 | 5.25 |
| 3 | Jack Donnelly | Kildare | 0–21 | 21 | 4 | 5.25 |
| 5 | Mick Ruane | Mayo | 4–4 | 16 | 3 | 5.33 |
| 5 | Pat Dunny | Kildare | 4–4 | 16 | 3 | 5.33 |
| 5 | Con O'Sullivan | Cork | 2–10 | 16 | 4 | 4.00 |
| 5 | Mickey Kearns | Sligo | 1–13 | 16 | 2 | 8.00 |
| 9 | John Timmons | Dublin | 2–9 | 15 | 2 | 7.50 |
| 9 | Seán O'Neill | Down | 2–9 | 15 | 4 | 3.75 |
;Single game
| Rank | Player | County | Tally | Total | Opposition |
| 1 | Tony Brennan | Meath | 3–2 | 11 | Wexford |
| 1 | Pat Dunny | Kildare | 3–2 | 11 | Dublin |
| 3 | Mick Ruane | Mayo | 3–1 | 10 | Sligo |
| 3 | Con O'Sullivan | Cork | 2–4 | 10 | Limerick |
| 3 | P. T. Treacy | Fermanagh | 2–4 | 10 | Monaghan |
| 3 | Michael McLoone | Donegal | 2–4 | 10 | Fermanagh |
| 3 | Cyril Dunne | Galway | 1–7 | 10 | Cork |
| 3 | Mickey Kearns | Sligo | 0–10 | 10 | Mayo |
| 9 | P. T. Treacy | Fermanagh | 2–3 | 9 | Armagh |
| 9 | John Hannigan | Donegal | 2–3 | 9 | Fermanagh |