Zofia Nałkowska (Warsaw, Congress Poland, then Russian Empire, 10 November 1884 – 17 December 1954, Warsaw, Poland) was a Polish writer, and member of the prestigious Polish Academy of Literature (1933–1939).
Born into a family of intellectuals dedicated to the socialist cause, she studied in the Flying University and become one of Poland's most distinguished writers of prose, characterized by realism and psychological depth.
Her first success was Romans Teresy Hennert ("The love of Therese Hennert", 1923). She is best known for her books Granica ("The Frontier", 1935); Węzły życia ("Bonds of Life", 1948) and Medaliony ("Medallions", 1947).