| Year: | 1991 |
| Dates: | 19 May – 15 September 1991 |
| Teams: | 32 |
| Team: | Down |
| Titles: | 4th |
| Team2: | Meath |
| Munster: | Kerry |
| Leinster: | Meath |
| Ulster: | Down |
| Connacht: | Roscommon |
| Topscorer: | Brian Stafford (4-62) |
| Matches: | 38 |
| Next: | 1992 |
The 1991 All-Ireland Senior Football Championship was the 105th staging of the All-Ireland Senior Football Championship, the Gaelic Athletic Association's premier inter-county Gaelic football tournament. The championship began on 19 May 1991 and ended on 15 September 1991.
In the Munster semi-final Kerry ended Cork's 2 years as All Ireland champions.
Down defeated Meath in the final by a scoreline of 1–16 to 1–14. The Ulster county's victory was to be the start of four consecutive All-Ireland titles for the province. For Meath, it was their second consecutive defeat in a final, having lost to Cork in the 1990 final.
The Championship was noted for the tie between Dublin and Meath that took three replays to decide.
Quarter-finals
Semi-finals
Finals
Note for the first time since 1975 there's a full, straightforward or proper open draw: top county teams such as Dublin, Meath or Offaly no longer get byes to the teams to the Quarter-finals.
Preliminary round
Quarter-finals
Semi-finals
Final
In 1991, for the first time in years, the Munster Championship got rid of its seeded draw system and moved to an open draw. With the exception of Tipperary in 1935, Kerry or Cork had won every Munster title since 1923. The open draw was expected to weaken Kerry and Cork, and improve Clare, Limerick, Tipperary and Waterford. Since 1947, Cork vs Kerry was the most common Munster final until 1990, but less common from then on.
Quarter-finals
Semi-finals
Final
Preliminary round
Quarter-finals
Semi-finals
Final
Semi-finals
Final
See main article: 1991 All-Ireland Senior Football Championship Final.
| Rank | Player | County | Tally | Total | Matches | Average | |
|---|---|---|---|---|---|---|---|
| 1 | Brian Stafford | Meath | 4-62 | 74 | 10 | 7.40 | |
| 2 | Ross Carr | Down | 0-30 | 30 | 6 | 5.00 | |
| 3 | Maurice Fitzgerald | Kerry | 0-29 | 29 | 4 | 7.25 | |
| 4 | Derek Duggan | Roscommon | 1-25 | 28 | 4 | 7.00 | |
| 5 | Bernard Flynn | Meath | 0-27 | 27 | 10 | 2.70 |
| Rank | Player | County | Tally | Total | Opposition |
|---|---|---|---|---|---|
| 1 | Maurice Fitzgerald | Kerry | 0-12 | 12 | Limerick |
| 2 | Derek Duggan | Roscommon | 1-8 | 11 | Meath |
| 3 | Noel Durkin | Mayo | 3-1 | 10 | London |
| Stefan White | Louth | 2-4 | 10 | Kildare | |
| Brian Stafford | Meath | 0-10 | 10 | Dublin | |
| 6 | Mick Lawlor | Laois | 2-3 | 9 | Louth |
| Brian Stafford | Meath | 1-6 | 9 | Dublin | |
| Brian Stafford | Meath | 1-6 | 9 | Wicklow | |
| Brian Stafford | Meath | 1-6 | 9 | Offaly | |
| Ross Carr | Down | 0-9 | 9 | Derry | |
| Brian Stafford | Meath | 0-9 | 9 | Roscommon | |
| Ross Carr | Down | 0-9 | 9 | Derry |