| Country |  Republic of Ireland |
|---|---|
| Region |  Connacht |
| Level on pyramid | 3 |
| Domestic cup(s) | Connacht Senior Cup League of Ireland Cup FAI Cup FAI Intermediate Cup |
| League cup(s) | Connacht League Cup/Shield Connacht Senior League Challenge Cup Connacht Senior League Incentive Cup |
| Most championships | Mervue United (8 titles) |
The Connacht Senior League was an association football league featuring amateur, intermediate, and League of Ireland reserve teams affiliated to the Connacht Football Association. It was a third level league in the Republic of Ireland football league system. An earlier provincial league, the Western League, had been active, on and off, since the 1930s before the Connacht Football Association decided to establish a more permanent league. The CSL was active between 1981 and 2000. In 2013 discussions were held about relaunching the league.