| Suininki | |
| Pushpin Map: | Finland |
| Coords: | 66.0667°N 68°W |
| Type: | Lake |
| Inflow: | Kurikkajoki |
| Outflow: | Varisjoki |
| Catchment: | Koutajoki |
| Basin Countries: | Finland |
| Area: | 21.713km2 |
| Depth: | 6.76m (22.18feet) |
| Max-Depth: | 26.12m (85.7feet) |
| Volume: | 0.147km3 |
| Shore: | 72.19km (44.86miles) |
| Elevation: | 252m (827feet) |
| Frozen: | December–May |
| Cities: | Kuusamo |
Suininki is a medium-sized lake in the Koutajoki main catchment area. It is located in Kuusamo municipality the region of Northern Ostrobothnia in Finland. Lake Suininki is a part of the Kuusinki catchment area.[1]