John F. Kennedy By Gaming Addictions0124 Apr 20, 2016 how old was John F. Kennedy when he become president John F. Kennedy was 43 making him the youngest presidents every elected Apr 20, 2016 Only regions president To date, Kennedy has been the only Roman Catholic president and the only president to have won a Pulitzer Prize Apr 20, 2016 The Assassination John F. Kennendy was assassinated in Dallas