| Sienno | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Lubusz |
| Subdivision Type2: | County |
| Subdivision Name2: | Słubice |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Ośno Lubuskie |
| Coordinates: | 52.4658°N 14.7811°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | right |
| Population Total: | 200 |
Sienno is a village in the administrative district of Gmina Ośno Lubuskie, within Słubice County, Lubusz Voivodeship, in western Poland.[1] It lies approximately 7km (04miles) west of Ośno Lubuskie, 200NaN0 north-east of Słubice, 440NaN0 south-west of Gorzów Wielkopolski, and 770NaN0 north-west of Zielona Góra.