List of Famous people who died in 1973

Sir Alan John Cobham, KBE, AFC was an English aviation pioneer.

Charles Edmund Lazar Horman was an American journalist and documentary filmmaker. He was executed in Chile in the days following the 1973 Chilean coup d'état led by General Augusto Pinochet, which overthrew the socialist president Salvador Allende. Horman's death was the subject of the 1982 Costa-Gavras film Missing, in which he was portrayed by actor John Shea.

Andrei Lvovich Abrikosov was a Soviet stage and film actor. In 1941, he was awarded the Stalin Prize. He appeared in 39 films between 1931 and 1972. His son, Grigori Abrikosov, also was a film actor.

Roland Dorgelès was a French novelist and a member of the Académie Goncourt.

Agostinho dos Santos was a Brazilian singer and composer of bossa nova, MPB and rock and roll, active from the early 1950s until his premature death in an airplane accident in 1973. Dos Santos is best known today for lending his voice to the soundtrack of the classic 1959 film Orfeu Negro. He is also credited with playing a role in the development of the careers of other important Bossa Nova artists, such as João Gilberto and Milton Nascimento. Dos Santos' voice was a baritone with bright coloring and a light vibrato, singing in a style called "crooner da orchestra".

Gerard Peter Kuiper was a Dutch astronomer, planetary scientist, selenographer, author and professor. He is the eponymous namesake of the Kuiper belt.

Princess Maria di Grazia was a princess of Bourbon-Two Sicilies and princess of Orléans-Braganza through her marriage to Prince Luiz of Orléans-Braganza.

Prince Ranieri Maria Gaetano, Duke of Castro was a claimant to the headship of the House of Bourbon-Two Sicilies.

Zhang Dongsun, also known as Chang Tung-sheng, was a Chinese philosopher, public intellectual and political figure. He was a professor of Philosophy and Sinology at Yenching University and Tsinghua University.

John Heysham Gibbon, AB, MD, was an American surgeon best known for inventing the heart–lung machine and performing subsequent open heart surgeries which revolutionized heart surgery in the twentieth century. He was the son of Dr. John Heysham Gibbon Sr., and Marjorie Young Gibbon, and came from a long line of medical doctors including his father, grandfather Robert, great-grandfather John and great-great grandfather.