Kochubey () is a rural locality (a selo) in Tarumovsky District, Republic of Dagestan, Russia. Population: There are 35 streets.
Kochubey is located 38 km north of Tarumovka (the district's administrative centre) by road. Talovka is the nearest rural locality.
Kochubey has a cold semi-arid climate (Köppen climate classification BSk), with moderate-cold winters and some of the hottest summers in Russia. Precipitation is quite low during all year with some maximum in summer.