| Gmina Grudusk | |
| Other Name: | Grudusk Commune |
| Settlement Type: | Gmina |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Ciechanów |
| Area Total Km2: | 96.69 |
| Population Total: | 3823 |
| Population As Of: | 2013[1] |
| Population Density Km2: | auto |
| Coor Pinpoint: | Grudusk |
| Coordinates: | 53.0586°N 20.6247°W |
| Seat: | Grudusk |
Gmina Grudusk is a rural gmina (administrative district) in Ciechanów County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Grudusk, which lies approximately 22km (14miles) north of Ciechanów and 970NaN0 north of Warsaw.
The gmina covers an area of 96.69km2, and as of 2006 its total population is 3,892 (3,823 in 2013).
Gmina Grudusk contains the villages and settlements of:
Gmina Grudusk is bordered by the gminas of Czernice Borowe, Dzierzgowo, Regimin, Stupsk and Szydłowo.