List of Famous people who are 84

François Florent, stage name of François Eichholtzer was a French theater actor. He was the founder of the eponymous drama school Cours Florent, the alumni of which include Isabelle Adjani and Audrey Tatou.

David Bryant Mumford is an American mathematician known for distinguished work in algebraic geometry, and then for research into vision and pattern theory. He won the Fields Medal and was a MacArthur Fellow. In 2010 he was awarded the National Medal of Science. He is currently a University Professor Emeritus in the Division of Applied Mathematics at Brown University.

Robert Emerson Lucas Jr. is an American economist at the University of Chicago, where he is currently the John Dewey Distinguished Service Professor Emeritus in Economics and the College. Widely regarded as the central figure in the development of the new classical approach to macroeconomics, he received the Nobel Prize in Economics in 1995 "for having developed and applied the hypothesis of rational expectations, and thereby having transformed macroeconomic analysis and deepened our understanding of economic policy". He has been characterized by N. Gregory Mankiw as "the most influential macroeconomist of the last quarter of the 20th century." As of 2020, he ranks as the 11th most cited economist in the world.

Thommy Berggren, né Tommy William Berggren is a Swedish actor. He is known for having starred in several films directed by Bo Widerberg, and was often considered as one of the foremost Swedish film and theatre actors from the early 1960s to the mid-2000s when he retired.