| Ciemniak | |
| Settlement Type: | Settlement |
| Total Type: | |
| Coordinates: | 53.6347°N 19.7822°W |
| Pushpin Map: | Poland |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Warmian-Masurian |
| Subdivision Type2: | County |
| Subdivision Name2: | Ostróda |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Ostróda |
| Timezone: | CET |
| Utc Offset: | +01:00 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +02:00 |
Ciemniak is a settlement in the administrative district of Gmina Ostróda, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland.[1]