Derhachi is a city in Kharkiv Raion, Kharkiv Oblast, eastern Ukraine. The town is 12 km (7 mi) northwest of the administrative center of the oblast, Kharkiv. The settlement was founded in the second half of the 17th century as a sloboda. It hosts the administration of Derhachi urban hromada, one of the hromadas of Ukraine. Population: 17,139.