Chyorny Klyuch () is a rural locality (a village) in Krasnovoskhodsky Selsoviet, Iglinsky District, Bashkortostan, Russia. The population was 14 as of 2010. There is 1 street.
Chyorny Klyuch is located 91 km northeast of Iglino (the district's administrative centre) by road. Krasny Yar is the nearest rural locality.