| Olsza | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Łódź |
| Subdivision Type2: | County |
| Subdivision Name2: | Brzeziny |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Rogów |
| Pushpin Map: | Poland |
| Coordinates: | 51.8167°N 70°W |
Olsza is a village in the administrative district of Gmina Rogów, within Brzeziny County, Łódź Voivodeship, in central Poland.[1] It lies approximately 3km (02miles) west of Rogów, 80NaN0 east of Brzeziny, and 270NaN0 east of the regional capital Łódź.