The Doge of Venice was the highest role of authority within the Republic of Venice. The word Doge derives from the Latin Dux, meaning "leader," originally referring to any military leader, becoming in the Late Roman Empire the title for a leader of an expeditionary force formed by detachments from the frontier army, separate from, but subject to, the governor of a province, authorized to conduct operations beyond provincial boundaries.

The Republic of Venice or Venetian Republic, traditionally known as La Serenissima, was a sovereign state and maritime republic in parts of the present-day Italian Republic, Istria and Dalmatia that existed for 1,100 years from 697 until 1797. Centered on the lagoon communities of the prosperous city of Venice, it incorporated numerous overseas possessions in modern Croatia, Slovenia, Montenegro, Greece, Albania and Cyprus. The republic grew into a trading power during the Middle Ages and strengthened this position during the Renaissance. Most citizens spoke the Venetian language, although publishing in Italian became the norm during the Renaissance.