The world's oldest person, Japan's Jiroemon Kimura, has died at the extremely ripe old age of 116. Kimura reportedly died of natural causes Wednesday morning in his hometown of Kyotango, after being hospitalized with pneumonia in May. He was Born April 19, 1897. According to Guiness.. he is the oldest person EVER. He was 116 years, 1 month, and 24 days.