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United Nations - Office of Legal Affairs

Office of the Under-Secretary-General for Legal Affairs
Under-Secretary-General for Legal Affairs and United Nations Legal Counsel: Patricia O'Brien




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Biography of Patricia O’Brien:

  • Patricia O’ Brien was appointed the Under-Secretary-General for Legal Affairs and UN Legal Counsel in August 2008. She oversees the Office of Legal Affairs, the overall objectives of which are to provide a unified central legal service for the Secretariat and the principal and other organs of the United Nations; to contribute to the progressive development and codification of international public and trade law; to promote the strengthening and development as well as the effective implementation of the international legal order for the seas and oceans; to register and publish treaties; and to perform the depositary functions of the Secretary-General;
  • Ms. O’Brien has extensive experience of legal and international affairs. Prior to her appointment she held a number of senior legal positions in Ireland. Immediately before taking up her position at the UN she served for five years as Legal Adviser to the Department of Foreign Affairs of Ireland where she advised on legal issues arising in Irish foreign policy, in particular public international law, human rights law and European Union law. She also served as a Senior Legal Adviser to the Attorney General of Ireland and as Legal Counsellor at the Irish Permanent Representation to the European Union in Brussels;
  • Earlier in her career Ms. O’Brien practiced law at the Irish Bar (1979-1988) and for one year at the Bar of British Columbia, Canada. Between 1989 and 1992 she held academic positions at the University of British Columbia, Canada;
  • Ms. O’Brien was conferred with a B.A. ( Mod ) Legal Science in 1978 and an M.A. in 1987 from Trinity College, Dublin; a B.L. (Barrister-at-Law) from Kings Inns, Dublin in 1978 and an LL.B. from the University of Ottawa Canada in 1990. She is a member of the Irish Bar (1978) and of the Bar of England and Wales (1986). She is a Fellow of the Society for Advanced Legal Studies, Institute of Advanced Legal Studies, London;
  • Ms. O’Brien has three children.