| Ostaszewo | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Warmian-Masurian |
| Subdivision Type2: | County |
| Subdivision Name2: | Nowe Miasto |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Grodziczno |
| Pushpin Map: | Poland |
| Coordinates: | 53.3833°N 68°W |
Ostaszewo is a village in the administrative district of Gmina Grodziczno, within Nowe Miasto County, Warmian-Masurian Voivodeship, in northern Poland.[1] It lies approximately 5km (03miles) south-east of Grodziczno, 160NaN0 east of Nowe Miasto Lubawskie, and 640NaN0 south-west of the regional capital Olsztyn.