| Upper Dumbell Lake | |
| Pushpin Map: | Canada Nunavut |
| Basin Countries: | Canada |
| Length: | 1km (01miles) |
| Width: | 1km (01miles) |
| Cities: | Alert, Nunavut |
Upper Dumbell Lake is a lake in Qikiqtaaluk Region, Nunavut. It is the northernmost named lake of Canada. It is located 5.2km (03.2miles) southwest of Alert, Canada's northernmost settlement, on the coast of Lincoln Sea, Arctic Ocean. The lake is roughly circular and 1km (01miles) in diameter.