John R. Dinger (born May 27, 1952 in Charles City, Iowa),[1] is a career diplomat in the United States Foreign Service.

He led some 300 staff and managed a $60 million budget to supply Secretaries of State Hillary Clinton and Condoleezza Rice with expert analysis of every country and every issue in the world.

He advocated in interagency debates State Department positions on counterterrorism strategies, plans, and operations.

He led the U.S. Government's interagency, rapid-reaction terrorism response team, ensuring that it was trained and poised to respond to a terrorist incident anywhere in the world.

He and his brother, Larry Dinger, have the distinction of being the first siblings in history to rise through the career ranks of the United States Foreign Service to become Ambassadors: Larry to Micronesia and Fiji and John to Mongolia.