Joanna Bruzdowicz (17 May 1943 – 3 November 2021) was a Polish composer.
Born in Warsaw, Bruzdowicz studied at the Warsaw Music High School, at the State Higher School of Music (composition with Kazimierz Sikorski and piano with Irena Protasiewicz and Wanda Osakiewicz); she earned her M.A. in 1966. She continued her studies in Paris on a scholarship from the French government and became a student of Nadia Boulanger, Olivier Messiaen and Pierre Schaeffer (1968–70). She joined the electroacoustic Groupe... meer