Molodohvardiisk (Ukrainian: Молодогвардійськ; Russian: Молодогвардейск, romanized: Molodogvardeysk) or Otamanivka (Ukrainian: Отаманівка) is a city in Luhansk Raion, Luhansk Oblast (region), Ukraine.

[1] Previous settlements at this location were called Sotsmistechko in the 1950s, and Atamanivka in the 1940s.

Molodohvardiisk was originally established in 1955, named after the Young Guard resistance group.

[3] Since 2014, Molodohvardiisk has been controlled by the Russian-controlled Luhansk People's Republic and not by Ukrainian authorities.

[4] On 19 September 2024, the Verkhovna Rada voted to rename Molodohvardiisk to Otamanivka.