Oksana Volodymyrivna Rubaniak (Ukrainian: Оксана Володимирівна Рубаняк; pseudo - Ksena; born 28 January 2003, Hramotne, Ivano-Frankivsk Oblast[1][2]) is a Ukrainian poet, writer, civic activist, servicewoman (lieutenant),[3] platoon commander of the Armed Forces of Ukraine, participant of the Russian-Ukrainian war.

[1] Since 2022, she has been studying at the Vasyl Stefanyk Precarpathian National University, specializing in Public Administration and Management.

She worked as an engaged specialist at the Department of Youth Policy and Sports of the Ivano-Frankivsk City Council.

[1][9][10] She performed combat missions at the Vuhlehirsk thermal power plant, Zaitseve, as well as on the Bakhmut, Marianka and Vuhledar directions.

[3][15] She is the author of the poetry collections "Ornamenty doli" (2020)[1][16] "Nazustrich smerti" (2023),[17] and "Doroha zhyttia" (2024).