Johannes Hendrikus "Jan" Jansen (born 26 February 1945) is a former Dutch track cyclist.
[1] He is a brother of Harrie Jansen.
At the 1968 Summer Olympics he won a silver medal in the 2000 metres tandem race, and finished fifth at the sprint race.
This biographical article related to Dutch cycling is a stub.
You can help Wikipedia by expanding it.This article about a Dutch Olympic medalist is a stub.