Jean Arnault (born in 1951 in France) is currently writing on lessons learned from the Guatemalan peace process. From 2011 to 2013 he was Professor of Practice at the Paris School of International Affairs Sciences Po Paris , where he taught International Mediation  and the Settlement of Civil Wars .
He previously served as United Nations Special Adviser to the Group of Friends of Democratic Pakistan from 2008 to 2009; Special Representative of the Secretary General in Georgia and Head of the UN Observer Mission in Georgia (UNOMIG) from 2006 to 2008; Special Representative of the Secretary General in Afghanistan and Head of the UN Assistance Mission in Afghanistan (UNAMA) from 2004 to 2006, where he was also Deputy in 2002-2003. He served as Representative of the Secretary General for Burundi and Head of the UN Office in Burundi (UNOB) from 2000 to 2001; and Special Representative of the Secretary General for Guatemala and Head of the UN verification mission in Guatemala (MINUGUA) from 1997 to 2000. He was Observer and then Mediator in the Guatemala peace negotiations from 1992 to 1996, when the Guatemalan Peace Accords were signed; and Senior Political Affairs Officer in Namibia, Afghanistan and Western Sahara from 1989 to 1991.
Arnault studied Philosophy, Linguistics and Political Science and graduated in Philosophy from University of Sorbonne-Paris I. He holds a postgraduate diploma in conference interpretation from the Polytechnic of Central London-University of Westminster. In 2001, he was a Visiting Fellow at the Centre for International Studies at Princeton University where he focused on lessons for mediators from peace processes in the 90s. See "Good Agreement, Bad Agreement? an Implementation Perspective, 2001" 
He is a member of the Council of the University for Peace (UPeace) headquartered in Costa Rica, and the Board of Trustees of Conciliation Resources (UK).
- "JEAN ARNAULT APPOINTED SPECIAL REPRESENTATIVE OF SECRETARY-GENERAL FOR AFGHANISTAN AND HEAD OF UNITED NATIONS ASSISTANCE MISSION IN AFGHANISTAN". United Nations. Retrieved 2008-10-20.
- (French) "ARNAULT, Jean". Montreal University. Retrieved 2008-10-20.