The term "Dukes of Russia" refers to various noble titles held by members of the Russian aristocracy, particularly during the medieval and early modern periods. These dukes often governed specific regions or principalities, playing significant roles in the political and military affairs of the time. Notable examples include the Grand Duke and Duke of Moscow, who were influential in the unification of Russia. The title of duke was often hereditary, passed down through noble families. Dukes were typically involved in the Russian Orthodox Church and contributed to the cultural and economic development of their territories. Their power diminished with the rise of the Tsardom of Russia and the centralization of authority under the tsars.