List of Famous people who are 73

Martin Vidnovic is an American actor and singer.

Robert Endre Tarjan is an American computer scientist and mathematician. He is the discoverer of several graph algorithms, including Tarjan's off-line lowest common ancestors algorithm, and co-inventor of both splay trees and Fibonacci heaps. Tarjan is currently the James S. McDonnell Distinguished University Professor of Computer Science at Princeton University, and the Chief Scientist at Intertrust Technologies Corporation.

Marc Perrin de Brichambaut is a French career judge and diplomat. On 10 December 2014 he was elected a judge to the International Criminal Court (ICC) in The Hague. Until 30 June 2011 he was the Secretary General of the Organization for Security and Co-operation in Europe.

Lowell Jay Milken is an American businessman, philanthropist, and co-founder and chairman of the Milken Family Foundation. He is also the founder of the TAP System for Teacher and Student Advancement as well as co-founder of Knowledge Universe, a provider of early childhood education. Milken is a former senior vice-president in the junk bond-trading operation of Drexel Burnham Lambert, headed by his brother Michael Milken.

Sir John Macleod Ball is a British mathematician and former Sedleian Professor of Natural Philosophy at the University of Oxford. He was the President of the International Mathematical Union from 2003–06 and a Fellow of Queen's College, Oxford.

István Tarlós is a Hungarian politician, who served as the Mayor of Budapest from 2010 to 2019. Previously he served as the Mayor of the Third District (Óbuda-Békásmegyer) of the city between 1990 and 2006. Since 2006 he was the Chairman of the Fidesz–Christian Democratic People's Party (KDNP) Fraction-Alliance in the General Assembly of the Municipality of Budapest, and served as the political leader of the initiative "Social Referendum 2008".

Mads Vinding is a Danish jazz double-bassist.

Évelyne Didi is a French actress. She has appeared in more than thirty films since 1978.

David William Cowens is an American former professional basketball player and NBA head coach. At 6'9", he played the center position and occasionally played power forward. Cowens spent most of his playing career with the Boston Celtics. He was the 1971 NBA Rookie of the Year and the 1973 NBA Most Valuable Player. Cowens won NBA championships as a member of the Celtics in 1974 and 1976. He was inducted into the Naismith Memorial Basketball Hall of Fame in 1991. Cowens has also held numerous coaching positions inside and outside the NBA.