| Kolonia Osieck | |
| Settlement Type: | Village |
| Total Type: | |
| Pushpin Map: | Poland |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Otwock |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Osieck |
| Population Total: | 148 (2015) [1] |
Kolonia Osieck is a village in the administrative district of Gmina Osieck, within Otwock County, Masovian Voivodeship, in east-central Poland.