Koktokay county (Chinese: 富蕴县), also known as Fuyun County (Uyghur: كۆكتوقاي ناھىيىسى; Chinese: 可可托海县; Kazakh: كوكتوعاي اۋدانى), is a county of Altay Prefecture, in the Xinjiang Uyghur Autonomous Region of China.

The seat of Fuyun County is in Ku Ertix Town.

The county is served by Fuyun Keketuohai Airport.

Fuyun County is divided into 5 towns, 5 townships.

This Xinjiang location article is a stub.