Marcelina Monika Zawisza [ˈmart͡sɛlina mɔnika ˈzaviʂa] ⓘ (born 3 May 1989 in Katowice, Poland[1]) is a Polish social activist and left-wing politician.

[2] She studied at the Institute of Social Policy of the Warsaw University where she completed a bachelor's degree (licencjat).

[1][2] In the 2015 parliamentary election, she ran as the first candidate on Razem's list in the Katowice electoral district.

[4] In January 2018, Forbes magazine included Zawisza on its annual European Forbes 30 Under 30 list in the "Law & Policy" category for her role as a co-founder of Razem, which organized the "black protest" against a total ban on abortion in Poland.

[3] Zawisza was elected to the Sejm on 13 October 2019, receiving 19,206 votes in the Opole district, campaigning from The Left list.