Saint Anthony of Kyiv was an 11th-century monk who established the monastic tradition in Kievan Rus'. Born in Liubech, he initially sought a solitary life as a hermit on Mount Athos. Upon returning to Kyiv, his strict asceticism attracted many followers, leading him to co-found the Kyiv Pechersk Lavra alongside Theodosius of Kyiv. Known for his profound spiritual guidance and austere lifestyle, he played a central role in the early development of Eastern Orthodox monasticism in the region.