Yuriy Ruf (Ukrainian: Юрій Руф), real name Yuriy Romanovych Dadak (Ukrainian: Юрій Романович Дадак; 26 September 1980 – 1 April 2022) was a Ukrainian poet, writer, scientist, public figure, and founder of a literary project "Dukh Natsiyi [uk]" ("Nation's spirit").

His publications include "Багряна лірика" (2012), "Час Революції" (2014), and "На зламі епох" (2015).

Fans describe his poetry as "front line lyrics", that is poetry of war and patriotism aimed at raising fighting spirit, delivering motivation, and a sense of national pride.

[4] His most recent publication "На зламі епох" (2015) was dedicated to Ukrainian heroes of the current Russian-Ukrainian war, and contains verses honoring certain individuals, military units, Ukrainian soldiers, battles, and other wartime events.

He was a reservist for the 24th mechanized brigade, and was killed in action during the 2022 Russian invasion of Ukraine in Luhansk Oblast.