| Zawidz Kościelny | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Sierpc |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Zawidz |
| Coordinates: | 52.8167°N 71°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 900 |
Zawidz Kościelny is a village in Sierpc County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Zawidz.[1] It lies approximately 16km (10miles) south-east of Sierpc and 1020NaN0 north-west of Warsaw.