Adriaan van Royen

{{Short description|Dutch botanist (1704–1779)}}

{{family name hatnote|van Royen|Royen|lang=Dutch}}

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| name = Adriaan van Royen

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| image =Adriaan van Royen.jpg

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| caption = Adriaan van Royen
Painting by Hieronymus van der Mey]

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| birth_date = {{birth date|1704|11|4}}

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| death_date = {{death date and age|1779|02|28|1704|11|4}}

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| nationality =Dutch

| fields = Botany

| workplaces =Leiden University

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Adriaan van Royen (11 November 1704 in Leiden – 28 February 1779 in Leiden) was a Dutch botanist. He was a professor at Leiden University and is associated with Carl Linnaeus.Sandermann Olsen, Sven-Erik, (1997): Bibliographia Discipuli Linnæi, Bibliographies of the 331 Pupils of Linnæus, Kopenhagen

He is best known for his work on flora of Southeast Asia. Adriaan van Royen formed a close relationship with Linnaeus, who had visited the Leiden Botanic Garden during a stay in Leiden between 1737 and 1738.

He was elected a Fellow of the Royal Society in 1728.{{cite web|url=https://collections.royalsociety.org/DServe.exe?dsqIni=Dserve.ini&dsqApp=Archive&dsqCmd=Show.tcl&dsqDb=Persons&dsqPos=0&dsqSearch=%28%28text%29%3D%27royen%27%29|title=Fellow details|publisher=Royal Society|accessdate=25 January 2017|archive-date=25 January 2022|archive-url=https://web.archive.org/web/20220125090144/https://collections.royalsociety.org/DServe.exe?dsqIni=Dserve.ini&dsqApp=Archive&dsqCmd=Show.tcl&dsqDb=Persons&dsqPos=0&dsqSearch=%28%28text%29%3D%27royen%27%29|url-status=dead}}

He died in Leiden in 1779.

The genus Royena L. (= Diospyros sect. Royena (L.) F.White), in the Ebenaceae, and Melastoma royenii Blume. Sutton, D.A. are named after him.

{{botanist|Royen|Royen, Adriaan van}}