Marcin Kacprzak (6 November 1888, Podolszyce - 14 July 1968, Warsaw) was a doctor, educator, pedagogue, publicist, pioneer of social medicine in Poland.

He received his medical diploma in 1915 at the National University of Kharkiv, then he worked as a doctor in the Pskov oblast.

[5] In 1922–1924, he studied hygiene and health care organisation at Johns Hopkins University in Baltimore on a Rockefeller Foundation scholarship.

In the years 1953–1954, he was the director of the newly established Institute of Improvement and Specialisation of Medical Personnel in Warsaw.

[10] After World War II, he led to the reactivation of the Polish Hygienic Society, of which he was the president until the end of his life.