Julian Aleksandrowicz (1908 Kraków –1988 Kraków) was a Polish medical professional, professor of medicine, and a notable specialist on leukemia. He is known for having developed concepts of comprehensive psychotherapy of persons suffering from somatic diseases, as well as of the ecological prevention of cancer and leukaemia. For most of his life, he lived in Kraków. He was an author of many medical texts (including the first Polish textbook on hematology), and a professor (since 1951) and a director of the notable Hematology Clinic at the Jagiellonian university medical college (1950–1978).