The North West Senior League is the provincial cricket league within the North West Cricket Union jurisdiction in Ireland, which covers counties Londonderry, Fermanagh, and part of Tyrone in Northern Ireland and County Donegal in the Republic of Ireland. The league has sixteen members and is divided into two sections of eight clubs, namely the Premiership and the Championship. There is promotion and relegation of one club between each division. It is sponsored by Long's Supervalu. Teams play each other twice per season, once at home and once away, each season, with two points awarded for a win and one for a tie or for “no result”.