| Gmina Osiek | |
| Other Name: | Osiek Commune |
| Settlement Type: | Gmina |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Kuyavian-Pomeranian |
| Subdivision Type2: | County |
| Subdivision Name2: | Brodnica |
| Coor Pinpoint: | Osiek |
| Coordinates: | 53.1667°N 42°W |
| Area Total Km2: | 75.12 |
| Population Total: | 4096 |
| Population As Of: | 2011[1] |
| Population Density Km2: | auto |
| Seat: | Osiek |
| Website: | http://www.gminaosiek.pl/ |
Gmina Osiek is a rural gmina (administrative district) in Brodnica County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. Its seat is the village of Osiek, which lies approximately 10km (10miles) south of Brodnica and 540NaN0 east of Toruń.
The gmina covers an area of 75.12km2, and as of 2006, its total population is 4,079 (4,096 in 2011).
Gmina Osiek contains the villages and settlements of Dębowo, Jeziorki, Kretki Duże, Kretki Małe, Kujawa, Łapinóż, Obórki, Osiek, Osiek-Kolonia, Strzygi, Sumin, Sumówko, Szynkowizna, Tadajewo, Tomaszewo, Warpalice, and Wrzeszewo.
Gmina Osiek is bordered by the gminas of Nowe, Rypin, Świedziebnia, and Wąpielsk.