The 2015–16 Leinster Senior Cup, was the 115th staging of the Leinster Senior Cup association football competition.
[1] The three winners from the preliminary round join the five clubs who received byes.
[1] The 4 winners from the first round join the top 2 teams from the 2014–15 Athletic Union League Premier A.
The 3 winners from the second round join the top 5 teams from the 2014–15 Leinster Senior League Senior Division.
[2] The 4 winners from the third round join the 12 Leinster teams from the League of Ireland.