| Gmina Kętrzyn | |
| Other Name: | Kętrzyn Commune |
| Settlement Type: | Gmina |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Warmian-Masurian |
| Subdivision Type2: | County |
| Subdivision Name2: | Kętrzyn |
| Area Total Km2: | 285.73 |
| Population Total: | 8285 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Coor Pinpoint: | Kętrzyn |
| Coordinates: | 54.0833°N 44°W |
| Seat: | Kętrzyn |
Gmina Kętrzyn is a rural gmina (administrative district) in Kętrzyn County, Warmian-Masurian Voivodeship, in northern Poland. Its seat is the town of Kętrzyn, although the town is not part of the territory of the gmina.
The gmina covers an area of 285.73km2, and as of 2006 its total population is 8,285.
Gmina Kętrzyn contains the villages and settlements of:
Gmina Kętrzyn is bordered by the town of Kętrzyn and by the gminas of Barciany, Giżycko, Korsze, Mrągowo, Reszel, Ryn, Srokowo and Węgorzewo.