Gmina Rościszewo is a rural gmina (administrative district) in Sierpc County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Rościszewo, which lies approximately 9 kilometres (5 mi) north-east of Sierpc and 112 km (69 mi) north-west of Warsaw
The gmina covers an area of 115.08 square kilometres (44.4 sq mi), and as of 2006 its total population is 4,216.