2026 Leinster Senior Football Championship

The 2026 Leinster Senior Football Championship was the 2026 iteration of the annual Leinster Senior Football Championship organised by Leinster GAA. It was one of the four provincial competitions of the 2026 All-Ireland Senior Football Championship. The winning team received the Delaney Cup. The draw for the championship was made on 27 November 2025.

The defending champions are Louth.

Westmeath defeated Dublin by 2-28 – 0-26 in the final to win their 2nd ever Leinster SFC and their first since 2004.