| Lake Menmecho | |
| Pushpin Map: | India Sikkim#India |
| Pushpin Map Caption: | Location in Sikkim |
| Pushpin Map Alt: | Location of Lake Menmecho |
| Location: | Gangtok district, Sikkim, India |
| Coords: | 27.3445°N 88.8177°W |
| Outflow: | Rangpo chu |
| Basin Countries: | India |
Menmecho Lake is a mountain lake located in Gangtok district in the Indian state of Sikkim. It lies on the way to the Jelep Pass and is situated ahead of the Lake Tsomgo. It is the source of the river Rangpo chu, a tributary of the Teesta River. The waters of the lake are sourced by melting snow in summer, and the monsoon in the wet season.
The lake is noted for its trout, and has a large fish farm nearby with a guesthouse. Menmecho is closed to tourists.