Karmolino-Gidroitsky () is a rural locality (a khutor) in Volnenskoye Rural Settlement of Koshekhablsky District, Adygea, Russia. The population was 213 as of 2018. There are 4 streets.
Karmolino-Gidroitsky is located 45 km south of Koshekhabl (the district's administrative centre) by road. Shelkovnikov is the nearest rural locality.