Fuyun (Koktokay) County (simplified Chinese: 富蕴县; traditional Chinese: 富蘊縣; pinyin: Fùyùn Xiàn; Uyghur language: خْكتْكاَي ناھىيىسى, Koktokay Nahiyisi) is a county situated in the Xinjiang Uyghur Autonomous Region and is under the administration of the Altay Prefecture. It has an area of 32,237 km² with a population of 80,000. The seat of Fuyun County is in Ku Ertix Town (库额尔齐斯镇). The Koktokay National Geopark is in Koktokay Town (可可托海镇).