| Year: | 1966 |
| Dates: | 1 May - 25 September 1966 |
| Teams: | 31 |
| Connacht: | Galway |
| Munster: | Cork |
| Leinster: | Meath |
| Ulster: | Down |
| Matches: | 32 |
| Poty: | Mattie McDonagh |
| Team: | Galway |
| Titles: | 7th |
| Captain: | Enda Colleran |
| Manager: | John "Tull" Dunne |
| Team2: | Meath |
| Captain2: | Dave Carty |
| Manager2: | Peter McDermott |
| Topscorer: | P. T. Treacy (4-12) |
| Previous: | 1965 |
| Next: | 1967 |
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.[1] 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.
Normal system back with just 1 Quarter-final vs 2 Semi-finals as usual.
Quarter-final
Semi-finals
Final
First round
Quarter-finals
Semi-finals
Final
Quarter-finals
Semi-finals
Final
Preliminary round
Quarter-finals
Semi-finals
Final
Semi-finals
Final
See main article: 1966 All-Ireland Senior Football Championship Final.
| 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 |
| Jack Donnelly | Kildare | 0-21 | 21 | 4 | 5.25 | |
| 5 | Mick Ruane | Mayo | 4-4 | 16 | 3 | 5.33 |
| Pat Dunny | Kildare | 4-4 | 16 | 3 | 5.33 | |
| Con O'Sullivan | Cork | 2-10 | 16 | 4 | 4.00 | |
| Mickey Kearns | Sligo | 1-13 | 16 | 2 | 8.00 | |
| 9 | John Timmons | Dublin | 2-9 | 15 | 2 | 7.50 |
| Seán O'Neill | Down | 2-9 | 15 | 4 | 3.75 |
| Rank | Player | County | Tally | Total | Opposition |
|---|---|---|---|---|---|
| 1 | Tony Brennan | Meath | 3-2 | 11 | Wexford |
| Pat Dunny | Kildare | 3-2 | 11 | Dublin | |
| 3 | Mick Ruane | Mayo | 3-1 | 10 | Sligo |
| Con O'Sullivan | Cork | 2-4 | 10 | Limerick | |
| P. T. Treacy | Fermanagh | 2-4 | 10 | Monaghan | |
| Michael McLoone | Donegal | 2-4 | 10 | Fermanagh | |
| Cyril Dunne | Galway | 1-7 | 10 | Cork | |
| Mickey Kearns | Sligo | 0-10 | 10 | Mayo | |
| 9 | P. T. Treacy | Fermanagh | 2-3 | 9 | Armagh |
| John Hannigan | Donegal | 2-3 | 9 | Fermanagh |