David van Royen was a Dutch physician and botanist who worked at the Hortus Botanicus Leiden where he succeeded his uncle Adriaan van Royen (1704-1779) as director.
- Occupation
- botanist, physician, university teacher, botanical collector
- Position held
- rector magnificus of Leiden University
- Citizenship
- Dutch Republic
- Born
- December 30, 1727
- Died
- April 19, 1799, April 29, 1799
