Who Was Alive

Were Jean Piaget and Donald Trump alive at the same time?

Yes. Jean Piaget and Donald Trump were alive at the same time for 34 years, from 1946 to 1980.

Jean Piaget was 49 when Donald Trump was born.

Donald Trump was 34 when Jean Piaget died, aged 84.

Jean Piaget

Swiss psychologist, biologist, logician, philosopher and academic

Born 9 August 1896 · died 16 September 1980, aged 84

Donald Trump

President of the United States

Born 14 June 1946 · living, 80 as of September 2026

  1. Albert Einstein
  2. Adolf Hitler
  3. Jean Piaget
  4. Ronald Reagan
  5. Donald Trump
  6. Vladimir Putin
  7. Michael Jackson
  8. Barack Obama
Jean Piaget and Donald Trump in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.