| Gacnik | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Pomeranian |
| Subdivision Type2: | County |
| Subdivision Name2: | Chojnice |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Brusy |
| Coordinates: | 53.9031°N 17.7453°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | right |
| Population Total: | 142 |
Gacnik (pronounced as /pl/) is a village in the administrative district of Gmina Brusy, within Chojnice County, Pomeranian Voivodeship, in northern Poland.[1] It lies approximately 3km (02miles) north-east of Brusy, 260NaN0 north-east of Chojnice, and 780NaN0 south-west of the regional capital Gdańsk.
For details of the history of the region, see History of Pomerania.