Renata Knapik-Miazga (née Knapik; born 15 July 1988) is a Polish épée fencer.

She participated in the 2020 and the 2024 Summer Olympics, winning the bronze medal in the épée team competition at the latter.

In the senior category she climbed her first World Cup podium in 2010 with a third place in Florina.

At the 2013 European Championships in Zagreb she reached the quarter-finals by defeating Ukraine's Anfisa Pochkalova, then lost to Romania's Ana Maria Brânză and came away with a bronze medal.

[4] Knapik studies civil engineering from the Tadeusz Kościuszko University of Technology.