Judge Andrzej Rzepliñski was born on 26 November 1949 in Ciechanów. Graduated from the Faculty of Law of the Warsaw University in 1971. Awarded his juris doctor's degree in 1978 and a habilitated doctor's degree in 1990. A full professor since 2000.
After graduation started a prosecutor's training in the District Prosecutor's Office in Garwolin and was admitted to the doctoral studies in criminology at the Legal Studies Institute of the Polish Academy of Sciences in 1972. From 1991 Chair-men of the Criminology and Criminal Policy and Head of the Center for Human Rights Studies at the Faculty of Applied Social Sciences and Resocialization of the Warsaw University. Served as an expert for the Civic Center of Legislative Initiatives of the "Solidarity" Trade Union and prepared a draft of Penal Execution Code and a draft of the Act on the National Council of the Judiciary. Also lectured at the DePaul University in Chicago and at the Saint Louis University.
In 1990 initiated and participated in drafting of a Bill of Rights and Freedoms, presented by a group of members of the Helsinki Committee in Poland, which was submitted (in November 1992) to the Sejm as a draft of Poland's Constitution by the President of the Republic of Poland. Participated in the Criminal Law Reform Commission of the Minister of Justice in a Team for the Penal Execution Code. In 1992-1993, upon request of the President of the Republic, prepared (with three co-authors) a draft of the Constitution of the Republic of Poland. Former member of the Helsinki movement for human rights protection (Helsinki Committee in Poland and the Board of the Helsinki Foundation for Human Rights), the Executive Committee of the International Helsinki Federation for Human Rights in Vienna, Committee on Bioethics of the Council of Europe. A member of the UN Economic, Social and Cultural Rights Committee until 2007.
Collaborated, inter alia, with the Chicago University Law School Center for the Study of Constitutionalism in Eastern Europe, the Max Planck institutes (für ausländische und internationales Strafrecht in Freiburg; für europäische Rechtsgeschite in Frankfurt/Main and für ausländische öffentliches Recht und Völkerrecht in Heidelberg) and with the Constitutional and Legal Policy Institute at the Central European University in Budapest.
In 1990 served as an advisor for the penitentiary law reform to the Polish Prison Service Chief, and, in 1998-2000, legal advisor to the Minister-Coordinator of Secret Services. Advisor to the President of the Institute of National Remembrance from 2001 to 2005.
Served as an expert for the Human Rights Monitoring Department of the Secretary General of the Council of Europe, UN expert on crime prevention and an expert to the OSCE Office for Democratic Institutions and Human Rights in Warsaw.
Author of numerous publications on human rights, the judiciary, criminology, the prison system, state crime, the death penalty, comparative penal policy, police law, corruption, as well as author of legal opinions presented to parliamentary committees, the Supreme Court, the European Court of Human Rights and the Constitutional Tribunal.
In December 2007 the Sejm of the Republic of Poland appointed him judge of the Constitutional Tribunal.