| Viekijärvi | |
| Pushpin Map: | Finland |
| Location: | Lieksa |
| Coords: | 63.4°N 72°W |
| Inflow: | Kannelkoski |
| Outflow: | via Halinjoki river to the lake Pielinen |
| Catchment: | Vuoksi |
| Basin Countries: | Finland |
| Area: | 24.811km2 |
| Depth: | 5.83m (19.13feet) |
| Max-Depth: | 23.2m (76.1feet) |
| Volume: | 0.145km3 |
| Shore: | 75.51km (46.92miles) |
| Elevation: | 93.8m (307.7feet) |
| Frozen: | December–April |
| Islands: | Kääläkänsaari |
| Cities: | Vieki |
Viekijärvi is a medium-sized lake in the Vuoksi main catchment area. It is located in the region Northern Karelia in Finland.[1]