Kupiansk (Ukrainian: Куп'янськ, pronounced [ˈkupjɐnʲsʲk]) is a city in Kharkiv Oblast, Ukraine. It serves as the administrative center of Kupiansk Raion. It is also an important railroad junction for the oblast. Kupiansk hosts the administrative offices of Kupiansk Urban Hromada, one of the hromadas of Ukraine.