César Fernando Mayoral (born December 21, 1947), is the current Permanent Representative of Argentina to the United Nations. He became the Permanent Representative in December 2003 and presented his credentials to the United Nations Secretary-General on January 16, 2004.
Between 2000 and 2003, Mayoral had been the ambassador of Argentina to Canada. In 1989, he was a delegate to the Human Rights Commission and at the Argentine Mission to the United Nations and International Organizations in Geneva, Switzerland.
Mayoral possesses a law degree from the Universidad de Buenos Aires and a doctorate in international relations from the Universidad del Salvador.