The Leinster Senior Football Championship is an annual Gaelic football competition held among the counties in the Leinster province of Ireland. It is one of the provincial championships that lead to the All-Ireland Senior Football Championship. The tournament typically features teams from various counties, competing in knockout rounds to determine the champion of Leinster. Established in 1887, the championship has a rich history and showcases some of the best talent in Gaelic football. The winning team earns the Bob O'Keeffe Cup and qualifies for the All-Ireland series, where they compete for the national title.