Gmina Drobin is an urban-rural gmina in Płock County, Masovian Voivodeship, in east-central Poland. Its seat is the town of Drobin, which lies approximately 29 kilometres north-east of Płock and 90 km north-west of Warsaw. The gmina covers an area of 143.19 square kilometres, and as of 2006 its total population is 8,531.