| Gumniska | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Warmian-Masurian |
| Subdivision Type2: | County |
| Subdivision Name2: | Kętrzyn |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Barciany |
| Pushpin Map: | Poland |
| Coordinates: | 54.2°N 44°W |
Gumniska is a village in the administrative district of Gmina Barciany, within Kętrzyn County, Warmian-Masurian Voivodeship, in northern Poland, close to the border with the Kaliningrad Oblast of Russia.[1] It lies approximately 3km (02miles) south-east of Barciany, 130NaN0 north of Kętrzyn, and 750NaN0 north-east of the regional capital Olsztyn.