Karl L. Rankin
Rankin delivering remarks at National Taiwan University Hospital's new facility groundbreaking ceremony, 31 August 1953
United States Ambassador to Yugoslavia
In office December 13, 1957 – April 22, 1961
Preceded by	James Williams Riddleberger
Succeeded by	George F. Kennan
United States Ambassador to China
In office April 2, 1953 – December 30, 1957
Preceded by	John Leighton Stuart
Succeeded by	Everett F. Drumright
Personal details
Born	(1898-09-04)September 4, 1898 Manitowoc, Wisconsin, United States
Died	January 15, 1991(1991-01-15) (aged 92) Kennebunkport, Maine, United States
Alma mater	California Institute of Technology Federal Polytechnic Institute Princeton University
Military service
Allegiance	United States
Branch/service	United States Navy
Battles/wars	World War I

Karl Lott Rankin (September 4, 1898 – January 15, 1991) was an American diplomat from Wisconsin.^[1]

Rankin was born September 4, 1898, to Emmet and Alberta Rankin in Manitowoc, Wisconsin.^[2] He would serve in the United States Navy during World War I and attended college at the California Institute of Technology, the Federal Polytechnic Institute in Zurich, Switzerland; and Princeton University.

As an official for the United States Department of State, Rankin began his career as Assistant Trade Commissioner in Prague, Czechoslovakia from 1927 to 1929. Later, he would serve as Commercial Attache in Prague from 1929 to 1932, in Athens, Greece and Tirana, Albania from 1932 to 1939, in Brussels, Belgium and Luxembourg from 1939 to 1940, in Belgrade, Serbia and Yugoslavia from 1940 to 1941, and in Cairo, Egypt in 1944. While working as Commercial Attache in Belgrade in 1940, Rankin also served a U.S. Consul. From 1941 to 1942, Rankin was detailed to Manila, Philippines. Rankin returned to Athens in 1944, this time as Economic Officer, serving until 1946. He would hold the same position in Vienna, Austria from to 1946 to 1947, when he again returned to Athens as Counselor until 1949. That year Rankin was promoted to U.S. Consul General in Canton, China; and also became Consul General in Hong Kong from 1949 to 1950. Rankin was appointed U.S. Chargé d'Affaires to the Republic of China, based in Taipei, from 1950 to 1953, before being named Ambassador from 1953 to 1957. Finally, Rankin returned to Yugoslavia, serving as U.S. Ambassador from 1957 to 1961.

Rankin was first married to Pauline Jordan [ro] on October 3, 1925. After his retirement from the diplomatic corps, they made his home in South Bridgton, Maine. In 1964, he published a memoir, China Assignment. Pauline Rankin died in 1976 and he married Ruth Thompson Garcelon in 1978. Rankin died of prostate cancer on January 15, 1991, in Kennebunkport, Maine. He was a Congregationalist.

• Karl L. Rankin Papers at Seeley G. Mudd Manuscript Library, Princeton University