Leinster Senior Football Championship

The Leinster Senior Football Championship, known simply as the Leinster Championship and shortened to Leinster SFC, is an annual inter-county Gaelic football competition organised by the Leinster Council of the Gaelic Athletic Association (GAA). It is the highest inter-county Gaelic football competition in the province of Leinster, and has been contested every year since the 1888 championship.

The final serves as the culmination of a series of games played during April and May, and the results determine which team receives the Delaney Cup. The championship has always been played on a straight knockout basis, whereby once a team loses they are eliminated from the championship.

The Leinster SFC is an integral part of the wider All-Ireland Senior Football Championship. The winners of the Leinster SFC final, like their counterparts in Connacht, Munster and Ulster, are rewarded by advancing directly to the All-Ireland SFC quarter-finals. Depending on results earlier in the season and elsewhere, some of the defeated teams may advance to the All-Ireland SFC, while other defeated teams play any further games they may have in the Tailteann Cup.

11 teams currently participate in the Leinster SFC. One of the most successful team in Gaelic football, namely Dublin, play their provincial football in this competition, and have won the title on a record 63 occasions, while they have also claimed 30 All-Ireland SFC titles.

The Leinster SFC title has been won at least once by 11 of the Leinster counties, eight of which have won the title more than once. Wicklow are the only team never to have won the title, while three-time winner Kilkenny no longer participate. Dublin have dominated the competition since its beginning.. Louth are the title holders, defeating Meath by 3–14 to 1–18 in the 2025 final.