Vorstius or Vorst is a Dutch and German surname. Notable people with the surname include:

• Aelius Everhardus Vorstius (1565-1624) Dutch physician, botanist and professor at Leiden University
• Conrad Vorstius (1569–1622) German-Dutch heterodox Remonstrant theologian, and professor of theology at Leiden University.
• Adolph Vorstius (1597–1663) Dutch physician and botanist, son of Aelius Everhardus

This page lists people with the surname Vorstius.
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