The Leinster Senior Cup is the most important provincial cricket knock-out cup of the Leinster jurisdiction in Ireland. The competition was renamed as the Leinster Senior League Cup between 2020 and 2022.
Traditionally a knock-out competition, from 2019 it has been played in a group format, with the winners and runners-up of two groups qualifying for semi-finals. In 2021, it was played as a T20 competition.