Jan Justus "Jan-Just" Bos (28 July 1939 – 24 March 2003) was a Dutch botanist, television presenter, and rower who competed in the 1960 and 1964 Summer Olympics.

While a student in Wageningen, he was the coxwain of the Dutch coxed pair, which was eliminated in the repechage at the 1960 Olympics.

Four years later he won a bronze medal in the same event, together with Erik Hartsuiker and Herman Rouwé.

[1][2] From 1968 on he worked at his Wageningen University, becoming a faculty member of the department of plant systematics.

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