Gydan
# Gydan

Gydan may refer to:

* Gydan Peninsula, a peninsula in the Kara Sea
* Gydan Bay, a bay in the Kara Sea
* Gydan Nature Reserve, the northernmost nature reserve in Western Siberia
* Gydan Mountains, an obsolete name for the Kolyma Mountains
* Yamal-Gydan tundra, an ecoregion in Northern Siberia
