| Olszanka | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Podlaskie |
| Subdivision Type2: | County |
| Subdivision Name2: | Sejny |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Sejny |
| Pushpin Map: | Poland |
| Coordinates: | 54.1°N 47°W |
Olszanka is a village in the administrative district of Gmina Sejny, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Lithuania.[1] It lies approximately 3km (02miles) south-east of Sejny and 1110NaN0 north of the regional capital Białystok.