São Nicolau Regional Football Association (Portuguese: Associação Regional de Futebol de São Nicolau, abbreviation: ARFSN,) is a football (soccer) association covering the island of São Nicolau .
It is headquartered in the island capital of Ribeira Brava[1] The association are one of six in Cape Verde that covers only one municipality.
The championship only has a single division where seven clubs participate, a club with the most points promotes into the National Championships.
The association has eight registered clubs, one is a non-participant Calejão, the regional champion competes in the National Championships each season.
The region's registered clubs as of October 2017 include.