20th-century Dutch biologists

Jacob van der Hoeden (Hebrew: יעקב ואן דר הודן, 27 July 1891 in Utrecht – 1 February 1968) was a Dutch-born Israeli veterinary research scientist.

Jan Ritzema Bos (25 July 1850, in Groningen – 7 April 1928, in Wageningen) was a Dutch plant pathologist and zoologist. He served as the first director of the Willie Commelin Scholten Foundation and founder of the Plant Protection Service in 1899 in Amsterdam. Bos described several species of plant nematode.