| Ostaszewo | |
| Settlement Type: | Village |
| Total Type: | |
| Coordinates: | 52.7664°N 20.8128°W |
| Pushpin Map: | Poland |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Ciechanów |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Sońsk |
| Population Total: | 77 |
Ostaszewo is a village in the administrative district of Gmina Sońsk, within Ciechanów County, Masovian Voivodeship, in east-central Poland, about 100km (100miles) north of Warsaw.[1]
The village is composed of five parts: Ostaszewo Wielkie, Ostaszewo-Pańki, Ostaszewo-Włuski, Ostaszewo-Wola Rańcza and Ostaszewo-Czernie.