After the Russian revolution, because of the imminent threat of Bolshevik persecution, Maliszewski immigrated to Poland in 1921. In 1925–1927 he was teaching at the Chopin Music School and was the Director of the Warsaw Music Society. In 1927 he served as Chairman of the First International Frederic Chopin Piano Competition. From 1931 to 1934 Maliszewski was the Director of the Music Department at the Polish Ministry of Education. From 1931 to 1939 he was a Professor at the Warsaw Conservatory. He died in Zalesie near Warsaw.