List of Famous people who died at 68

Marie-Antoinette Tonnelat was a French theoretical physicist. She received her doctorate in 1939 under the supervision of Louis de Broglie. She is best known for her work related to Albert Einstein's Theory of Relativity. Her research focused on synthesizing the concepts gravity, electromagnetism, and nuclear forces within the basic framework provided by Einstein's theory of relativity. Along with the help of Einstein and Schrödinger, she played a role in developing Unified Field Theory.

Silvio Amadio was an Italian film director and screenwriter. He directed 24 films between 1957 and 1981. His film Wolves of the Deep was entered into the 9th Berlin International Film Festival. He is known to horror film fans for directing Amuck! (1972), a giallo film starring Rosalba Neri and Barbara Bouchet.

Mario David (1927–1996) was a French film and television actor. A character actor he appeared on screen from the 1950s to the 1990s in supporting roles.