Svatopluk I of Moravia

Ruler of Great Moravia from 870 to 894

Svatopluk I or Svätopluk I, also known as Svatopluk the Great, was a ruler of Great Moravia, which attained its maximum territorial expansion during his reign (870–871, 871–894). Svatopluk's career started in the 860s, when he governed a principality within Moravia, the location of which is still a matter of debate among historians, under the suzerainty of his uncle, Rastislav. In 870 Svatopluk dethroned Rastislav, who was a vassal of Louis the German, and betrayed him to the Franks.

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