| Oberblegisee | |||||
| Coords: | 46.9808°N 9.0133°W | ||||
| Basin Countries: | Switzerland | ||||
| Pushpin Map: | Canton of Glarus#Switzerland#Alps | ||||
| Pushpin Label Position: | bottom | ||||
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Oberblegisee is a lake in the Canton of Glarus, Switzerland. It is located at an elevation of, above the village of Luchsingen and below the peaks of Glärnisch. Its surface area is .