Sienno
The following places in Poland are called Sienno :
- Sienno (Wągrowiec) (Eng. Schreibersdorf ), village in the powiat Wągrowiecki of the Greater Poland Voivodeship; see Wągrowiec (rural municipality)
- Sienno (Dobrcz) , village in the Bydgoski powiat of the Kuyavian-Pomeranian Voivodeship; see Dobrcz
- Sienno (Ośno Lubuskie) (Eng. Seefeld ), village in the powiat Słubicki of the Lubusz Voivodeship; see Ośno Lubuskie
- Sienno (Powiat Lipski) , village and parish in the powiat Lipski of the Masovian Voivodeship