The winners of the Ulster Senior League have also been invited to play in the now defunct League of Ireland Cup. Despite using the Ulster name in its title, almost all of its clubs are based in County Donegal and the City of Derry. The most successful club in the league has been Fanad United who have won fourteen league titles and ten league cups.
The champions of the Ulster Senior League have also been invited to participate in the now discontinued League of Ireland Cup, a competition that was primarily focused on clubs from County Donegal and Derry City. The most successful club in the league is Fanad United, which has dominated the competition with fourteen league titles and ten league cups.