| Piwonin | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Otwock |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Sobienie-Jeziory |
| Coordinates: | 51.95°N 38°W |
| Pushpin Map: | Poland |
| Population Total: | 100 |
Piwonin is a village in Otwock County, Gmina Sobienie-Jeziory. The population is near 100. In the village is Voivodship Road 739. From 1975 to 1998 village was in Siedlce Voivodeship. It lies approximately 3km (02miles) northwest of Sobienie-Jeziory, 190NaN0 south of Otwock, and 360NaN0 southeast of Warsaw.