| Ostrówek | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Wołomin |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Klembów |
| Coordinates: | 52.3833°N 43°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 1800 |
Ostrówek is a village in the administrative district of Gmina Klembów, within Wołomin County, Masovian Voivodeship, in east-central Poland.[1] It lies approximately 4km (02miles) south-east of Klembów, 100NaN0 east of Wołomin, and 320NaN0 north-east of Warsaw.