| Ukonvesi | |
| Pushpin Map: | Finland |
| Location: | Mikkeli |
| Coords: | 61.6°N 45°W |
| Inflow: | Siikasalmi strait |
| Outflow: | Juurisalmi strait, Haapakaarre |
| Catchment: | Vuoksi |
| Basin Countries: | Finland |
| Area: | 24.233km2 |
| Depth: | 5.91m (19.39feet) |
| Max-Depth: | 30.44m (99.87feet) |
| Volume: | 0.143km3 |
| Shore: | 162.84km (101.18miles) |
| Elevation: | 75.7m (248.4feet) |
| Frozen: | December–April |
| Islands: | Papinsaari |
Ukonvesi is a medium-sized lake in the Vuoksi main catchment area. It is located in the Southern Savonia region in Finland.[1]