List of Famous people who died at 91

Gerald Augustine Paul Regan was a Canadian politician, who served as the 19th Premier of Nova Scotia from 1970 to 1978.

Roberto Suazo Córdova was the President of Honduras from 1982 until 1986. Suazo Córdova died on 22 December 2018 following an ulcer surgical operation at the age of 91.

Sir Hans Leo Kornberg, FRS was a British-American biochemist. He was Sir William Dunn Professor of Biochemistry in the University of Cambridge from 1975 to 1995, and Master of Christ's College, Cambridge from 1982 to 1995.

Agnes Ullmann was a French microbiologist.

Nikolai Isaakovich Pastukhov was a Soviet and Russian actor.

Patrick "Paddy" Joseph Reid was an Irish dual-code rugby centre. Reid played club rugby under the rugby union code for Garryowen, and played international rugby for Ireland, and was part of the Grand Slam winning team of 1948. The following season, he switched codes, joining professional rugby league club Huddersfield, before ending his league career with Halifax.

Gerhard Emmanuel "Gerry" Lenski, Jr. was an American sociologist known for contributions to the sociology of religion, social inequality, and introducing the ecological-evolutionary theory. He spent much of his career as a professor at the University of North Carolina at Chapel Hill, where he served as chair of the Department of Sociology, 1969–72, and as chair of the Division of Social Sciences, 1976-78.

Vera Nikolaevna Kublanovskaya was a Russian mathematician noted for her work on developing computational methods for solving spectral problems of algebra. She proposed the QR algorithm for computing eigenvalues and eigenvectors in 1961, which has been named as one of the ten most important algorithms of the twentieth century. This algorithm was proposed independently by the English computer scientist John G.F. Francis in 1959.

Charles Huron Kaman was an American aeronautical engineer, businessman, inventor, and philanthropist, known for his work in rotary-wing flight and also in musical instrument design via the Kaman Music Corporation.

Bin Akao , also known as Satoshi Akao, was a Japanese far-right politician who served as a member of the House of Representatives of Japan during World War II.