| Katarzyna Maria Piekarska | |
| Nationality: | Polish |
| Office: | Member of the Sejm |
| Constituency: | 19-Warsaw |
| Term Start: | 12 November 2019 |
| Term Start1: | 14 October 1993 |
| Term End1: | 4 November 2007 |
| Constituency1: | 19-Warsaw |
| Party: | Polish Initiative (since 2019) Democratic Left Alliance (1997-2019) Freedom Union (1993-1997) |
| Birth Place: | Warsaw, Poland |
| Signature: | Katarzyna Piekarska signature 2023.svg |
Katarzyna Maria Piekarska (pronounced ; born 23 September 1967 in Warsaw) is a Polish left-wing politician, member of the Polish Initiative party.
She is a graduate of the Uniwersytet Warszawski in law. She worked as a lawyer.
She was elected to the Sejm on 25 September 2005, getting 26511 votes in 19 Warsaw district as a candidate from Democratic Left Alliance list. However, she failed to be elected in the 2007 election.
She was also a member of Sejm 1993–1997, Sejm 1997–2001, and Sejm 2001–2005. During her third term she was a chairman of the Justice and Human Rights commission.
From 2004 to 2005 she was a Vice Chairman of the party and during 2005 Presidential elections a chairman of Włodzimierz Cimoszewicz campaign.
In 2008 she was elected the vice-president of the Democratic Left Alliance despite not being member of the parliament.
She is a well-known advocate of ethical treatment of animals and a vegetarian. She also writes poems and plays.