Szymon Jerzy Ziółkowski (pronounced [ˈʂɨmɔn ʑuwˈkɔfskʲi]; born 1 July 1976 in Poznań) is a retired Polish hammer thrower and an Olympic gold medal winner from Sydney 2000.

He also won a gold medal at the 2001 World Championships in Edmonton with a career best throw of 83.38 metres, and two silvers at the 2005 and 2009 editions in Helsinki and Berlin respectively.

In 2009 World Championships in Athletics in Berlin he won silver medal with the result of 79.30m finishing 50 cm behind the Olympic champion of Beijing Primož Kozmus.

For his sport achievements, he received: Knight's Cross of the Order of Polonia Restituta (5th Class) in 2000.

Officer's Cross of the Order of Polonia Restituta (4th Class) in 2009.