| Grodzki Młyn | |
| 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: | Reszel |
| Coordinates: | 54.0411°N 21.1253°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 40 |
Grodzki Młyn is a village in the administrative district of Gmina Reszel, within Kętrzyn County, Warmian-Masurian Voivodeship, in northern Poland.[1] It lies approximately 2km (01miles) south-west of Reszel, 180NaN0 west of Kętrzyn, and 500NaN0 north-east of the regional capital Olsztyn.