Grand Duke of Finland

The Grand Duke of Finland, alternatively the Grand Prince of Finland, was a title used by most Swedish monarchs from 1580 to 1720. The title was first adopted by King Johan III of Sweden, who had been the duke of Finland in 1556–1563. It was briefly revived in 1802–1805 for Prince Carl Gustav, who died in childhood.

In 1809, after Finland was ceded to Russia, it became the autonomous Grand Duchy of Finland. Between 1809 and 1917, the emperor of Russia held the title of Grand Duke of Finland as the ruler of the grand duchy.

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