| Rząśnik | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Wyszków |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Rząśnik |
| Coordinates: | 52.7°N 43°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 1300 |
Rząśnik (pronounced as /pl/) is a village in Wyszków County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Rząśnik.[1] It lies approximately 14km (09miles) north-west of Wyszków and 600NaN0 north-east of Warsaw.