| Gamchen | |
| Elevation M: | 2539 |
| Elevation Ref: | [1] |
| Prominence M: | 1750 |
| Prominence Ref: | [2] |
| Listing: | Ultra |
| Map: | Russia Kamchatka Krai |
| Location: | Kamchatka, Russia |
| Range: | Eastern Range |
| Coordinates: | 54.9742°N 160.7033°W |
| Type: | Complex volcano |
| Last Eruption: | 550 BC |
Gamchen (Russian: Гамчен) is a complex volcano located in the southeastern part of the Kamchatka Peninsula, Russia. It is composed of four stratovolcanoes.