Berestyn, formerly known as Krasnohrad or Krasnograd, is a city in Kharkiv Oblast, Ukraine. From 1784 to 1922, it was known as Kostiantynohrad. It serves as the administrative center of Krasnohrad Raion. Krasnohrad hosts the administration of Krasnohrad urban hromada, one of the hromadas of Ukraine. In 2022, the population was estimated to be 19,674.