Roman Kyrylovych Sushko (Ukrainian: Роман Кирилович Сушко; 9 March 1894 – 12 January 1944) was a Ukrainian officer and politician who served on the Provid (the émigré leadership) of the Organisation of Ukrainian Nationalists (OUN) and later the Melnykite faction. He also cofounded its predecessor, the Ukrainian Military Organisation (UVO), and was a veteran of the First World War and the Ukrainian War of Independence, serving as a senior officer in the Sich Riflemen. Sushko collaborated with the Nazis from 1938 whereby he commanded two battalions, codenamed Bergbauernhilfe, as part of the plan