The Namiestnik (or Viceroy) of the Kingdom of Poland (, ) was the deputy of the King of Poland (Tsar of Poland)—i.e., the deputy of the Emperor of Russia who, under Congress Poland (1815–74), styled himself "King of Poland." Between 1874 and 1914, when the former Congress Poland was known as the Vistula Country, the title Namiestnik was replaced by that of Governor-General of Warsaw .