Renate Winter (born March 8, 1944) is a judge to the Special Court for Sierra Leone  and an expert on family law, juvenile justice systems, women’s justice issues and child labour. She is a founding member of the International Institute for the Rights of the Child (IDE)  which is dedicated to the worldwide training of judicial personnel and dissemination of information on children’s rights and former president of the International Association of Youth and Family Court Judges.
Justice Winter is furthermore contributor to the Draft Model Law on Juvenile Justice, the UN Manual on Juvenile Justice, and the Draft Model Law on Child Victims & Witness Protection.
From 1981 to 1996 Justice Winter has been a Judge at the Vienna Youth Court, where she has undertaken projects to help rehabilitate juveniles with problems of drug addiction and mental disability. Justice Winter has also worked on projects relating to youth and child soldiers for the United Nations, including in numerous African countries as well as in Latin America. 
Throughout the 1990s, Justice Winter chaired numerous international conferences on matters relating to juvenile justice and gender-related justice issues.
From 1996 to 2000 she was Consultant for the UN Center for the International Crime Prevention (CICP) at the United Nations in Vienna  advising government officials on the implementation on the implementation of the Convention on the Rights of the Child on four continents (e.g. in the Balkans, in the Baltics, in Central European and Asian Countries, in the Maghreb, in East and West Africa and Latin America.)
From 2000 to 2002 Winter was International Judge with the United Nations Mission in Kosovo (UNMIK) at the Mitrovica Regional District Court and Justice at the Supreme Court of Kosovo as part of the United Nations interim civilian administration.