Masu Usui

JAPAN supercentenarian data

  • Full name: Masu Usui [Japanese: 臼井ます]
  • Lifespan: 18.12.1910
  • Age: 113 years
  • Birthplace: Japan
  • Last residence: Oyama, Shizuoka Prefecture, Japan
  • Application date: 18.09.2021
  • Validation date: 05.01.2024
  • Validation source: MHLW, Japan/Ayuta Tonomura/et al.


Masu Usui was born in Oyama, Shizuoka Prefecture, Japan on 18 December 1910.

In September 2016, she was recognized as the oldest living person in Oyama City.

In December 2020, Usui celebrated her 110th birthday, reaching supercentenarian status. By November 2021, she was acknowledged as the third-oldest known living person in Shizuoka Prefecture, following Kahoru Furuya and Hana Kato.

Upon the passing of 114-year-old Kahoru Furuya on 25 December 2022, Usui assumed the title of the oldest living person in Shizuoka Prefecture.

Masu Usui currently resides in Oyama, Shizuoka Prefecture, Japan, at the remarkable age of 113 years and 18 days.

Longevity Recognition

  • Oldest living person in Shizuoka Prefecture (25.12.2022 – present)


The age of Masu Usui has been meticulously examined and verified by the Ministry of Health, Labour and Welfare (MHLW) in Japan, Ayuta Tonomura, et al., and validated by the Gerontology Research Group (GRG) on January 5, 2024.

Masu Usui at age 112 in September 2023, being honored by major Masahide Komiyama.

Masu Usui at age 105 in 2016.

Masu Usui at age 103 in 2014.

Photo courtesy of Oyama City and Shizuoka Prefecture.

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