2003 All-Ireland Senior Football Championship

The 2003 All-Ireland Senior Football Championship was the 117th staging of the All-Ireland Senior Football Championship, the Gaelic Athletic Association's premier inter-county Gaelic football tournament. The championship began on 4 May 2003 and ended on 28 September 2003.

Armagh entered the championship as the defending champions.

On 28 September 2003, Tyrone won the championship following a 0-12 to 0-9 defeat of Armagh in the All-Ireland final. This was their first All-Ireland title.

Tyrone's Peter Canavan was the championship's top scorer with 1-48. Armagh forward Steven McDonnell was the choice for the Vodafone Footballer of the Year award.

Format
The provincial championships in Munster, Leinster, Ulster and Connacht were run as usual on a "knock-out" basis. These provincial games were then followed by the "Qualifier" system:
 * Round 1 of the qualifiers included all the counties (except New York) that did not qualify for the Provincial Semi-finals. An open draw was made to give eight pairings.
 * Round 2 consisted of the eight defeated teams in the Provincial Semi-finals playing against the eight winners from Round 1. A draw was made to determine the eight pairings.
 * Round 3 consisted of the eight winners from Round 2. Another open draw was made to determine the four pairings.
 * Round 4 consisted of the four winners from Round 3 playing against the beaten Provincial finalists. A draw was made to determine the pairings.

The All-Ireland Quarter-finals: Each of the four Provincial Champions played one of the four winners from Round 4. The All-Ireland Semi-finals were played on a Provincial rota basis, initially determined by the Central Council. If a Provincial Championship winning team was defeated in its Quarter-final, the team that defeated it took its place in the semi-final.

Connacht Senior Football Championship
Quarter-finals

Semi-finals

Final

Munster Senior Football Championship
Quarter-finals

Semi-final

Final

Ulster Senior Football Championship
Preliminary round

Quarter-finals

Semi-finals

Finals

Leinster Senior Football Championship
First round

Quarter-finals

Semi-finals

Final

All-Ireland
The provincial champions and the winners of round 4 contested the quarter-finals. The quarter final matches would be between a provincial champion and a round 4 winner.

Quarter-finals

Semi-finals

Final

Top scorers

 * Overall


 * Single game

Miscellaneous

 * Limerick beat Cork for the first time since 1965.
 * The first Munster championship meeting between Limerick and Clare since 1988.
 * Laois won their first Leinster title in 57 years for the first time since 1981 neither Dublin or Meath reached the Leinster final.
 * Tyrone won their first All Ireland title marketing a historic 6th breakthrough of Ulster counties hitting the "Roll of Honor" after Cavan 1933, 1935, 1947, 1948, 1952, Down 1960, 1961, 1968, 1991, 1994 Donegal in 1992, Derry in 1993 & Armagh in 2002
 * The old system would have seen a Galway vs Laois All Ireland semi-final.