List of Famous people born on April 21st

Charles Chaplin was an English Member of Parliament (MP). He represented Stamford from 1809 to 1812 and Lincolnshire from 1818 to 1831.

Percy Williams Bridgman was an American physicist who received the 1946 Nobel Prize in Physics for his work on the physics of high pressures. He also wrote extensively on the scientific method and on other aspects of the philosophy of science. The Bridgman effect and the Bridgman–Stockbarger technique are named after him.

Jean Bonfils was a 20th-century French organist, music educator, musicologist and composer.

Rachel Honderich is a Canadian badminton player from Toronto, Ontario. She has been one of the top ranked women's individual and doubles player on the continent and a contender in major international competitions. She is a vice-national champion in women's singles and has won several international titles since 2010.