Iwona Niedzwiedz (born 22 July 1979) is a Polish handball player.
She lastly played for the club SPR Lublin SSA, and she played for the Polish national team and represented Poland at the 2013 World Women's Handball Championship in Serbia.
Niedzwiedz also played for Poland women's national beach handball team and participated at the 2019 European Beach Handball Championships in Stare Jablonki.