Jan Blonski (15 January 1931 – 10 February 2009) was a Polish historian, literary critic, publicist and translator.
He was a leading representative of the Kraków school of literary criticism, regarded as one of the most influential critics of postwar Poland.
Professor of the Jagiellonian University, Blonski was habilitated there for the work entitled Mikolaj Sep Szarzynski and the beginnings of the Polish Baroque.
He was the literary editor for the publication of Witold Gombrowicz's collected works in 1986–88 through Wydawnictwo Literackie.
He was also the Fellow of Collegium Invisibile.
In 1996–2001 he served as juror for the Nike Literary Award.
In November 1995 he was awarded the Kraków Book of the Month Award for the collected works of Slawomir Mrozek, his long-time friend from the Stalinist period.