Adolphus Vorstius (born Adolphe Vorst; 18 November 1597, Delft – 9 October 1663, Leiden) was a Dutch physician and botanist.
Here, he learned Greek under Henricus Bredius and Bonaventura Vulcanius, and studied the writings of Homer and Lucian.
After further studies under Paul Reneaulme in Blois, he earned his medical doctorate at the University of Padua under Adriaan van den Spiegel on 20 August 1622.
Returned home, he received from the Regent Maurice of Orange an appointment as associate professor of medicine at the University of Leiden; an office he stepped up to on 10 February 1624.
In addition, he also participated in the organizational tasks of the University of Leiden and was in the years 1636, 1652 and 1660 rector of the Alma Mater.