Koljaku
| Koljaku | |
|---|---|
| Village | |
| Country |
 Estonia |
| County | Lääne-Viru County |
| Parish | Vihula Parish |
| Population (2006) | |
| • Total | 46 |
| Time zone | EET (UTC+2) |
| • Summer (DST) | EEST (UTC+3) |
Koljaku is a village in Vihula Parish, Lääne-Viru County, in northeastern Estonia.
