Arsenius (born Alexander Ioannovich Matsieyevich in 1697) was a high-ranking clergyman of the Russian Orthodox Church who served as the metropolitan of Rostov and Yaroslavl. Born in Volodymyr, he rose to significant ecclesiastical authority within the Russian Empire. He is primarily remembered for his courageous opposition to Empress Catherine II, specifically regarding her 1764 decision to seize church-owned lands. This defiance led to his removal from his position and subsequent imprisonment in a Tallinn fortress, where he died in 1772.