Sievierodonetsk ( ), Sieverodonetsk ( ) or Severodonetsk ( ) is a city in the Luhansk Oblast of Ukraine. Sievierodonetsk has the status of a city of regional significance, It is located nearby the Seversky Donets River, approximately to the north north west from the Oblast capital, Luhansk. Sievierodonetsk is the acting administrative centre of Luhansk Oblast due to Luhansk being temporarily controlled by self-proclaimed "Luhansk People's Republic", which is beyond the control of the Government of Ukraine, similarly to Kramatorsk acting as the administrative center of Donetsk Oblast during the Russo-Ukrainian War - their previous cities are still "de jure" administrative centres. Its population is approximately .