List of Famous people who died at 91

Chao Yao-tung was a Taiwanese politician, and economist.

Boris Ivan Balinsky was a Ukrainian and South African biologist, embryologist, entomologist, professor of Kiev University and University of the Witwatersrand. Pioneer researcher in the field of experimental embryology, electron microscopy and developmental biology. He was author of popular textbook in embryology An Introduction to Embryology.

Shunpei Ueyama was a Japanese philosopher associated with the postwar Kyoto School. He graduated in philosophy from Kyoto University in 1943, and trained in a kamikaze human torpedo (gyorai:魚雷) squad. His main professional interest in philosophy were in the fields of logic, and American pragmatism, especially with its founding fathers Charles Sanders Peirce, William James and John Dewey. He was emeritus professor at Kyoto University.

Clark McAdams Clifford was an American lawyer who served as an important political adviser to Democratic presidents Harry S. Truman, John F. Kennedy, Lyndon B. Johnson, and Jimmy Carter. His official government positions were White House Counsel (1946–1950), Chairman of the President's Intelligence Advisory Board (1963–1968), and Secretary of Defense (1968–1969); Clifford was also influential in his role as an unofficial, informal presidential adviser in various issues. A successful Washington lawyer, he was known for his elite clientele, charming manners, and impeccable suits.

Carl-Axel Acking was a Swedish architect, author and furniture designer, winner of the Lunning Prize in 1952.

Charles Harting "Chuck" Percy was an American businessman and politician. He was president of the Bell & Howell Corporation from 1949 to 1964, and served as a Republican U.S. Senator from Illinois from 1967 until 1985, following a defeat to Paul Simon. He was mentioned as a Republican presidential hopeful from 1968 through 1988. During his Senate career, Percy concentrated on business and foreign relations.