🇺🇦 Lebedyn (Лебеди́н) is a city in Sumy Oblast, Ukraine. Lebedyn is located in Sumy Raion. Before July 2020, Lebedyn served as the administrative centre of Lebedyn Raion; it was administratively incorporated as a city of oblast significance and did not belong to the raion. An air base is located nearby. The city also has a railway station. Lebedyn was built in 1653 as a small wooden fortress (ostrog) of the Tsardom of Russia. In 1708 the settlement was a site of executions of Cossacks in Lebedin, in which supporters of Ivan Mazepa were mass executed on the orders of Peter the Great. Since April 1780 it was the administrative centre of Lebedin uyezd in Kharkov Governorate of the Russian Empire. In 1994 an oil plant was opened in Lebedyn.
Lebedyn has a population of over 24,238 people. Lebedyn also forms part of the wider Sumy Oblast which has a population of over 1,053,402 people.