Eugene Bossilkov was a Bulgarian Catholic prelate and a member of the Passionist Congregation who served as the Bishop of Nicopolis. Born in Belene in 1900, he pursued advanced theological studies in Rome, focusing on the historical union between Bulgaria and the Holy See. Following his appointment to the episcopacy in 1947, he faced intense persecution from the communist government that had taken power in his country. He was arrested in 1952 and eventually executed by a firing squad for crimes he did not commit.