Dr Arjun Kumar Karki is the Ambassador Extraordinary and Plenipotentiary of the Government of Nepal to the United States of America. Dr. Karki is also Ambassador-Designate to Columbia, Coasta Rica, Guatemala, Honduras, Nicaragua, Mexico, and Guyana.

Dr. Karki has more than 20 years of experience in international relations, international diplomacy, international negotiations, conflict mediation, peace-building as well as development co-operation at the local, national, regional and global levels. He has undertaken the International Diplomacy and Leadership Training from Harvard Law School, USA; the International Diplomacy and Diplomatic Protocol Management Training from EUROPROTOCOL, UK and the International Negotiations: Practical Skills and Techniques Training Course from The United Nations Institute for Training and Research (UNITAR).