Vladika or Wladika (Serbian: владика, Russian: влады́ка) is an informal Slavic title and address for bishops in the Eastern Orthodox Church and Eastern Catholic Churches, specifically the Russian, Serbian, Bulgarian and the American Orthodox Churches. In Old Church Slavonic, the meaning of the word is equivalent to the English mister or lord.
From the early-16th to the mid-19th century in Montenegro, the title referred to the bishop of Cetinje, who also served as the prince-bishop or leader of the Prince-Bishopric of Montenegro.