Maximilian III may refer to:
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Maximilian III, Archduke of Austria
Maximilian III of Austria (12 October 1558 – 2 November 1618), was a member of the House of Habsburg and the Archduke of Further Austria from 1612 until his death. He was also briefly known as Maximilian of Poland during his claim for the Polish ...
(1558–1618)
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Maximilian III Joseph, Elector of Bavaria (1727–1777)
{{Hndis, Maximilian III