Ostap Slyvynsky is a Ukrainian poet, translator, essayist, and scholar. He has authored five books of poetry: Sacrifice of Big Fish (1998), The Midday Line (2004), Ball in Darkness (2008), Adam (2012), The Winter King (2018), as well as The Ukrainian Dictionary of War (2023), a documentary book based on the testimony of participants and witnesses of the Russian aggression against Ukraine. He is Associate Professor at the Department of Philology, Ukrainian Catholic University (Lviv). Since 2021, he organizes PEN Ukraine's festival Propysy (The Writings) aimed at novice authors. He was elected the Vice President of PEN Ukraine in 2022.