List of Famous people who are 78

Philippe Gaulier is a French master clown, pedagogue, and professor of theatre. He is the founder of École Philippe Gaulier, a prestigious French theatre school in Étampes, outside Paris. He studied under Jacques Lecoq in the mid-1960s and was an instructor at L'École Internationale de Théâtre Jacques Lecoq in the late 1970s. As well as performing as a clown, he is also a playwright and director. He has published The Tormentor, a book discussing his thoughts on the theatre and containing exercises designed to develop an actor's skill.

Roberto Kobeh González is a Mexican engineer and politician, formerly the President of the Council of the International Civil Aviation Organization (ICAO) was in office from 1 August 2006 until 1 Jan 2014.

Herbert Kenneth Kunen was a professor of mathematics at the University of Wisconsin–Madison who worked in set theory and its applications to various areas of mathematics, such as set-theoretic topology and measure theory. He also worked on non-associative algebraic systems, such as loops, and used computer software, such as the Otter theorem prover, to derive theorems in these areas.