List of Famous people who died at 70

Lucie Favier was a French archivist, married to French historian Jean Favier.

Chandos Sydney Cedric Brudenell-Bruce, 7th Marquess of Ailesbury, styled Earl of Cardigan or Lord Cardigan between 1911 and 1961, was a British peer.

John Desmond Bernal was an Irish scientist who pioneered the use of X-ray crystallography in molecular biology. He published extensively on the history of science. In addition, Bernal wrote popular books on science and society, and he was also a communist activist.

Francis Dreyfus was a French record producer, who focused on jazz and electronic music, publishing Jean-Michel Jarre's first commercially successful work, Oxygène.

Rafael Ángel Calderón Guardia was a Costa Rican doctor and politician, who served as President from 1940 to 1944.

Igor Borisovitch Markevitch was an avant-garde Russian composer and eminent conductor of Ukrainian origin who studied and worked in Paris and became a naturalized Italian and French citizen in 1947 and 1982 respectively. He was commissioned in 1929 for a piano concerto by impresario Serge Diaghilev of the Ballet Russe de Monte Carlo.