18 December 1910Oyama, Shizuoka, Japan



Current Residence

Oyama, Shizuoka, Japan

Masu Usui

Masu Usui (Japanese: 臼井ます) is a Japanese supercentenarian whose age has been validated by LongeviQuest.

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Masu Usui was born in Oyama, Shizuoka Prefecture, Japan, on 18 December 1910. She has been familiar with literature since she was young, and even at the age of 105, she remained active in her daily life; writing tanka poems about her everyday emotions and the scenery of Mount Fuji, and she also sang the British national anthem.

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On September 12, 2014, the Mayor of Oyama visited the nursing home where she resided. She was presented with a bouquet and a commemorative gift to honor her longevity as the oldest person in the town. She would later be visited by the mayor again in September 2016 and September 2019.

In September 2022, she was reported as the second-oldest living person in Shizuoka Prefecture, behind Kahoru Furuya. Following Furuya’s passing on 25 December 2022, Usui became the oldest living person in the Prefecture.

Her age was verified by Japan’s Ministry of Health, Labour, and Welfare (MHLW), as well as Ryohei Asano, Yu Li, and Yumi Yamamoto, and validated by LongeviQuest on 23 August 2023.

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* “最高齢者へお祝い訪問” “最高齢者へお祝い訪問” – Oyama Town Public Relations, 12 September 2014

* “100歳以上の高齢者 小山町長が祝福” – Shizuoka Shimbun, 13 September 2014

* “最高齢者へお祝い訪問” – Oyama Town Public Relations, 12 September 2016

* “105歳の臼井さん 小山町長お祝い 御殿場” – Shizuoka Shimbun, 14 September 2016

* Shizuoka Prefecture Press Release, 27 December 2022