Ronald Ian "Ron" Spiers (July 9, 1925 – June 24, 2021) was an American diplomat who served as an Ambassador to several countries during the 1970s and 1980s.
Spiers was born in Orange, New Jersey in July 1925 but grew up in Peru, London, Paris and Brussels.
During his career with the State Department, Spiers worked in a variety of assignments, often involving arms control.
In 1964 Spiers became director of NATO Affairs, serving until 1966, when he was appointed the Political Counselor at the U.S. Embassy to the United Kingdom.
In 1974 he returned to London as Charge d'affaires and Deputy Chief of Mission, holding this post until 1977 when he was appointed by President Carter as the U.S.
In 2004 Spiers again returned to the public eye when he joined Diplomats and Military Commanders for Change, a group of former diplomats, ambassadors, and military leaders criticizing the foreign policy of President George W. Bush and supporting the election of John Kerry in the 2004 U.S. presidential election.