The Museum of Modern Art in Warsaw (, MSN), also known as MSN Warsaw, is a modern and contemporary art museum in Warsaw, Poland. The museum was founded in 2005 and the director of the museum since June 6, 2007 has been Joanna Mytkowska. MSN was a cultural institution co-run by the Ministry of Culture and National Heritage and the city of Warsaw, from 2023 it is a local government cultural institution run by the city of Warsaw.
In 2024, the museum opened in its Thomas Phifer-designed venue at Marszaà Âkowska Street. The permanent collection is expected to be presented by February 2025. Before its current location, the museum was located at temporary premises: Museum at Paà Âska (office spaces at ul. Paà Âska 3) and the Museum over Vistula pavilion (exhibition space at Wybrzeà ¼e Koà Âciuszkowskie 22), which was designed by A. Krischanitz and decorated by Sà Âawomir Pawszak.
In 2006, the first international architectural competition for the design of the museum was announced. The competition was won in February 2007 by architect C. Kerez. It was chosen from over 100 designs. Eventually however, in May 2012, the City terminated the contract with Christian Kerez. At the same time it was decided that for the next three years the temporary location for the museum would be in Paà Âska Street, off the nearby main thoroughfare Emilii Plater.
The new custom-built museum was designed by the New York City-based architecture studio Thomas Phifer and Partners, chosen in the two-stage tender proceeding in 2013âÂÂ14. Located on the northern side of Plac Defilad (city center), it was opened on 25 October 2024.
In an interview with ARTnews on September 29 2025, the museum director Joanna Mytkowska highlighted that the new building is already an iconic architectural landmark in the centre of Warsaw, reflecting multiple aspects of Polish history including war time destruction, communism era and the post communism transformation period. Mytkowaska said the museum's collection reflect this transformation from local interpretations of art to international audiences.
The museum presents the achievements and changes in Polish art of the twentieth and twenty-first century in an international context, creates an art collection, presents significant phenomena in the field of visual arts, film, theater and music, as well as supports exceptionally talented artists. The museum has in its collection works by Mirosà Âaw Baà Âka, Yael Bartana, Wojciech Bàkowski, Rafaà  Bujnowski, Oskar Dawicki, Ion Grigorescu, Aneta Grzeszykowska, KwieKulik, Deimantas NarkeviÃÂius, Jadwiga Sawicka, Krzysztof Wodiczko, Andrzej Wróblewski, Artur à »mijewski, Magdalena Abakanowicz, Paweà  Althamer, Katarzyna Kozyra, Jarosà Âaw Modzelewski, Katarina à  eda, Wilhelm Sasnal, Marek Sobczyk, Monika Sosnowska, Alina Szapocznikow, Piotr Uklaà Âski, archives of Eustachy Kossakowski, among others.