| Official Name: | Aydarken |
| Native Name: | Kirghiz; Kyrgyz: Айдаркең |
| Pushpin Map: | Kyrgyzstan |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Name: | Kyrgyzstan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Batken |
| Subdivision Type2: | District |
| Subdivision Name2: | Kadamjay |
| Established Title: | Founded |
| Established Date: | 1941 |
| Population As Of: | 2021 |
| Population Total: | 12031 |
| Coordinates: | 39.94°N 71.33°W |
| Elevation M: | 2000 |
Aydarken (Kirghiz; Kyrgyz: Айдаркен|Aydarken; Russian: Хайдаркен|Khaydarken or more recently Айдаркен) is a city[1] in Batken Region of Kyrgyzstan. It is part of the Kadamjay District.[2] The population of Aydarken amounted to 12,031 in 2021. Aydarken is situated at about 2,000 m elevation, on the northern slopes of the Alay Range.
The Aydarken Mercury Plant (KMP) was the third largest producer of primary mercury in 2005. The ore reserves (which also contain antimony) exploited are located in or near Aydarken.[3] The Minamata Convention on Mercury includes provisions which will eliminate primary mercury mining.[4]