Jan Rutkowski (8 April 1886–21 May 1949) – creator of the so-called Poznań school, specialised in the economic history of Poland in the sixteenth-nineteenth century. For years – since 1919 – professor at the University of Poznań, head of the chair of economic history. Earlier, in 1918 became involved in the establishment of the Central Statistical Office, held lectures at the University of Warsaw and the School of Economics. From 1924 corresponding member and from 1932 active member of the Polish Academy of Learning; also member of, i.a. the Warsaw Scientific Society and the Poznań Society of Friends of Sciences.