Judge Marian Zdyb was born on 8 December 1951 in Sandomierz. He graduated from the Faculty of Law and Administration of Maria Curie - Skłodowska University in Lublin in 1975. A juris doctor in 1983, and habilitated doctor in 1991. Since 1993 professor at Maria Curie - Skłodowska University and since 1994 - at the Catholic University of Lublin. In 1996 he acquired a title of professor of legal sciences, and in 2001 became a full professor. From 1993 to 1996 - a deputy dean of the Department of Lay and Canon Law at the Catholic University of Lublin. Since 1993 to 1999 head of the Chair of the Administration and Administrative Law Studies at the Catholic University of Lublin.
From December 1996 to November 1997 Marian Zdyb was a judge of the Supreme Administrative Court.

He co-operates, among others, with the John Paul II Institute at the Catholic University of Lublin, Department of Law Sciences of the Scientific Society at the Catholic University of Lublin, Conrad Adenauer Stiftung, the Sandomierz Scientific Society, and the Lublin Scientific Society. He is a member of the Scientific Council and Editorial Board of "The Review of Comparative Law", and of the Editorial Board of "Scientific Annals WSSS".

Marian Zdyb is the author of over 100 scholarly publications, including 23 books on administrative law and public economic law.

Marian Zdyb was a Judge of the Constitutional Tribunal from 1997 to 2001.