Jan Willem may refer to
People Jan Willem Beyen (1897–1976), Dutch diplomat Jan Willem Boudewijn Gunning (1860–1913), Dutch doctor Jan-Willem Breure (born 1988), Dutch media producer and artist Jan Willem de Jong (1921–2000), Dutch indologist Jan Willem de Pous (1920–1996), Dutch politician Jan Willem de Winter (1761–1812), Dutch Admiral Jan-Willem Gabriëls (born 1979), Dutch Olympic rower Jan Willem Hunter Morkel (1890–1916), South African rugby union player Jan Willem Janssens (1762–1838), Dutch nobleman Jan Willem Pieneman (1779–1853), Dutch artist Jan Willem Spruyt (1826–1908), South African statesman Jan Willem Storm van Leeuwen, Dutch chemist Jan Willem te Kolsté (1874–1936), Dutch chess master Jan Willem van Ede (born 1963), Dutch footballer
Ships , Dutch cargo ship in service 1950–51
See also Jan Willems (died 1688), Dutch pirate