Zygmunt Ziembiński OPR (June 1, 1920 – May 19, 1996), usually cited as Z. Ziembinski, was a Polish legal philosopher, logician, and one of the most prominent theoreticians of law in Poland in the second half of the 20th century.

[1] He was Professor of Jurisprudence at the Adam Mickiewicz University, where between 1981 and 1991 he chaired its Department of Legal Theory and Philosophy of Law.

His most famous works are Practical Logic (Springer Netherlands, 1976) and Basic Problems of Jurisprudence (Polish Scientific Publishers PWN, 1980).

His father had a doctorate in psychology and worked as Director of Libraries of the Ministry of Religious Affairs and Public Education; his mother was a painter.

thesis under the supervision of Czesław Znamierowski, who introduced Ziembiński to the field of Legal Theory and convinced him to major in the subject.