List of Famous people who died at 52

Imre Lakatos was a Hungarian philosopher of mathematics and science, known for his thesis of the fallibility of mathematics and its "methodology of proofs and refutations" in its pre-axiomatic stages of development, and also for introducing the concept of the "research programme" in his methodology of scientific research programmes.

Juliano Mer-Khamis was an Israeli/Palestinian actor, director, filmmaker, and political activist of Jewish and Palestinian Eastern Orthodox Christian parentage. On 4 April 2011, he was assassinated by a masked gunman in the Palestinian city of Jenin, where he had established The Freedom Theatre.

Maciej Kozlowski was a Polish actor, mostly known for his roles in Kingsajz, Psy, Kiler, With Fire and Sword and Schindler's List and the TV series M jak miłość.

Helder Proença was a Guinea-Bissauan politician who served as Minister of Defense of Guinea-Bissau during the administration of President João Bernardo Vieira.

René-Jean Chauffard was a French film actor. He appeared in 40 films between 1945 and 1972.