Count Zygmunt Mycielski (17 August 1907 – 5 August 1987) was a Polish composer and music critic. He was born in Przeworsk and completed his childhood education in Kraków, where he was taught by . In 1928, Mycielski moved to Paris, where he studied composition at École Normale de Musique with Paul Dukas and Nadia Boulanger. While there, he served as president of the Association of Young Polish Musicians in Paris from 1934 to 1936. In 1936, he moved back to Poland and began his music and writing career. Mycielski died in Warsaw and he was buried in Wiśniowa on the Wisłok River.