Gmina Słupca is a rural gmina in Słupca County, Greater Poland Voivodeship, in west-central Poland. Its seat is the town of Słupca, although the town is not part of the territory of the gmina. The gmina covers an area of 144.93 square kilometres, and as of 2006 its total population is 8,974. The gmina contains part of the protected area called Powidz Landscape Park.