Czesław Znamierowski (1888–1967) was a Polish philosopher, jurist and sociologist. He was Professor of Jurisprudence at the University of Poznań and chaired its Department of Legal Theory and Philosophy of Law. Znamierowski is noted in Polish law for his contributions to social sciences (social ontology) and jurisprudence, particularly the concept of legal system which is similar to H.L.A. Hart's ideas, but was published almost forty years before Hart's The Concept of Law.
After passing his final exams in Yelatma's high school, Znamierowski studied philosophy, mathematics and physics at the Leipzig University, where he was also attending Wilhelm Wundt's lectures. Between 1906 and 1907 he studied philosophy and history at the Saint Petersburg State University. In 1909, Znamierowski started psychology studies under the supervision of Carl Stumpf at the Friedrich Wilhelm University and continued his philosophical studies under the supervision of Hans Cornelius a