Robert Fred Ellsworth (June 11, 1926 – May 9, 2011) was an American legislator and diplomat. He served as the United States Permanent Representative to NATO (an ambassadorial-level appointment) between 1969 and 1971. He had previously served three terms as a Republican Member of Congress from Kansas, from 1961 to 1967, and as an Assistant to the President during the presidency of Richard Nixon; under President Gerald Ford, he was Deputy Secretary of Defense. Ellsworth also served as assistant to the chairman of the Federal Maritime Commission.
Ellsworth was born in Lawrence, Kansas, and was educated in the public schools of that city. He served in the United States Navy during World War II and the Korean War. In 1945, he was graduated with a baccalaureate in engineering from the University of Kansas, where he had been a member of the Alpha Nu chapter of the Beta Theta Pi collegiate fraternity. He then studied law at the University of Michigan Law School, from which he was graduated in 1949; he practiced law in Lawrence, Kansas, and in Springfield, Massachusetts.
On November 9, 2010, Ellsworth provided commentary to KFMB regarding an unexplained missile launch off the coast of Los Angeles. He cautioned the news crew to wait for definitive answers from the military, then went on to speculate, "It could be a test firing of an intercontinental ballistic missile from a submarine, an underwater submarine, to demonstrate, mainly to Asia, that we could do that."
- "Former Kansas Congressman Robert Fred Ellsworth dies at age 84". Lawrence Journal-World. May 11, 2011. Retrieved October 13, 2021.
- "Kansans in the United States Congress". Kansapedia. Kansas Historical Society. Retrieved October 13, 2021.
- Verzeichnis der Mitglieder der Balley Brandenburg des Ritterlichen Ordens St. Johannis vom Spital zu Jerusalem; Berlin: 2008; p. 94.
- "Mysterious missile lights up the sky over the Pacific - San Diego, California News Station - KFMB Channel 8 - cbs8.com". Archived from the original on 2010-11-10.
- "Robert Ellsworth, Lawmaker and Nixon Aide, Is Dead at 84". New York Times (New York ed.). May 11, 2011. p. A26. Retrieved October 13, 2021..
- United States Congress. "Robert Ellsworth (id: E000148)". Biographical Directory of the United States Congress. Retrieved on 2008-03-31
- Appearances on C-SPAN