| Olszak | |
| Settlement Type: | Village |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Greater Poland |
| Subdivision Type2: | County |
| Subdivision Name2: | Koło |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Babiak |
| Coordinates: | 52.3283°N 18.6703°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | right |
| Population Total: | 50 |
Olszak is a village in the administrative district of Gmina Babiak, within Koło County, Greater Poland Voivodeship, in west-central Poland.[1] It lies approximately 2km (01miles) south of Babiak, 150NaN0 north of Koło, and 1200NaN0 east of the regional capital Poznań.