Born in Gdańsk (Poland).

Walentynowicz graduated from the Academy of Music in Gdańsk, Hochschule für Musik und Theater in Hannover, and from the Hochschule für Musik und Darstellende Kunst in Stuttgart, where she obtained an honours degree in the interpretation of contemporary music after studies with Nicolas Hodges.
Currently she dedicates her performing work to new music as a soloist, in ensembles, and with orchestras.
She increasingly takes part in projects with multimedia, performance art, and elements of music theatre.

Małgorzata Walentynowicz won the 1st Prize at the 37th Gaudeamus Interpreters’ Competition in Amsterdam and 1st Prize at the Yvar Mikhashoff Trust for New Music Competition in Buffalo, New York.
For her interpretations of contemporary music, she was also granted a scholarship for excellency in performance from the Darmstadt International Summer Courses for New Music. She was nominated for the Classical:Next Innovation Award 2017 in Rotterdam. 

Małgorzata Walentynowicz has performed both as a soloist and as a chamber musician in festivals and venues such as MaerzMusik, Ultraschall Berlin, Warsaw Autumn Festival, Wittener Tage für neue Kammermusik, Rainy Days in Luxembourg, ECLAT Stuttgart, Klangspuren Schwaz, ISCM World Music Days, the Summer Courses for New Music in Darmstadt, SPOR in Aahrus, Acht Brücken Festival Cologne, Huddersfield Contemporary Music Festival, European Weeks Festival in Passau, Sacrum Profanum in Cracow, Tzlil Meudcan Tel Aviv, Cairo Contemporary Music Days.

As a soloist she has appeared notably with the Warsaw Philharmonic Orchestra, Polish Radio Orchestra, Sinfonia Iuventus, the New Music Orchestra, Illinois Modern Ensemble, and Neofonia Ensemble.

Her interpretations have been released on CD's by Wergo, Genuin Classics, Bôłt Records, DUX and Polmic and were recorded by polish and german radio stations.

Małgorzata Walentynowicz performs with Ensemble Garage Köln.