Kagoshima City: one 111-year-old (Sato Sakashita, 20 Mar 1914) and one 110-year-old (Chiyo Ogura, 10 Nov 1915) on 1 January 2026.

Found by musicotic:

As of 1 January 2026, there is still 1 110-year-old woman and 111-year-old man living in Kumamoto City, Kumamoto. This means Momo Katoaka (3 Dec 1915) and Hikaru Kato are still alive. There are also 3 109-year-old women. One of them is a woman born in December 1916, one is Toki Hirota (7 Feb 1916) and one is a woman born in March 1916.

Kyōto City, Kyōto: all four supercentenarians are still alive as of 1 January 2026! Unfortunately, 109-year-old Shinobu Hirano has entered limbo (there are currently no living 109-year-olds in the city).

Masao Kadoguchi's successor as oldest living person in the prefecture is 109-year-old Motome Nakamura (中村モトメ) of Isahaya, born on 1 December 1916.

Mrs Yukie Takahashi (高橋雪枝) of Akiruno, Tōkyō was alive as of 1 January 2026, three days before her 113th birthday.

Kawasaki, Kanagawa: there are two 109-year-old women as of 31 December 2025, and one 108-year-old man (this means one of the two 108-year-old men on 1 September 2025 has entered limbo).

-. Shigeru Iwamoto (岩本茂), M, 104, 1920.12 (lives in Yurihama) (oldest living man in the prefecture) (per 1 September 2025)

He passed away on February 1, 2026, at the age of 105.
May he rest in peace.
The identity of the new oldest living man in Tottori Prefecture is currently unknown.

https://zenkoku-okuyami.com/obituary/tottori/yurihamacho/?date=20260205

Akashi City, Hyogo Prefecture

One woman aged 110. Born January 1916.

https://www.city.akashi.lg.jp/soumu/j_kanri_ka/shise/toke/juuki/akashinenrebetsu.html

Nanto city, toyama prefecture

One woman aged 110. Born January 1916.

https://www.city.nanto.toyama.jp/soshiki/shimin/5/1/reiwa7/6880.html

Iwaki city, Fukushima
One woman born in December 1915 is 110 years old.
https://www.city.iwaki.lg.jp/www/contents/1714631360226/index.html

Saitama City, Saitama: three SCs on 1 Feb 2026 (Obara, Arai, woman b. Jan 1916)

Kawaguchi, Saitama: one SC on 1 Feb 2026 (born January 1916).

Kōriyama, Fukushima: oldest on 1 Jan 2026 is a 109-year-old woman, so the oldest woman was born 2 Jan-15 Sept 1916. The oldest living man, aged 108, is also the oldest living man in the prefecture.

Iruma, Saitama: the woman born in January 1914 has turned 112 (alive on 1 Feb 2026).

Fukuyama city, Hiroshima Prefecture

three SC on Feb 1 2026 (born Nov 1914, Mar 1915,Jan 1916)

https://www.city.fukuyama.hiroshima.jp/soshiki/johokanri/24115.html#mati

Takamatsu City ,Kagawa

one SC on Feb 1,born on Jan 1916 (Yone Kunita?)

https://www.city.takamatsu.kagawa.jp/kurashi/shinotorikumi/tokei/jinko/toroku/R_08/R80101.html

All three supercentenarian women from Minoh, Ōsaka (the oldest of whom is Shime Nakanishi, b. 3 Jan 1914) alive as of 31 December 2025.

Tōkyō (東京都)
-. Not Available, F, 111, 1913.12.02 - 1914.01.01 (lives in Kodaira) (per 1 September 2025)
She is still alive as of February 1, 2026, now 112 years old.
https://www.city.kodaira.tokyo.jp/kurashi/125/125819.html

Hiroshima (広島県)
-. Not Available, F, 110, 1916.01 (lives in Fukuyama) (per 31 January 2026)
There is no doubt that this woman is the woman seen in this video. The video post states that she turned 110 years old on January 10th, but in the video from April last year, she herself states, ''I was born on January 9th, 1916.'' I don't know which one is correct.
https://www.instagram.com/dearrest.fukuyama/reel/DUAy7fXj8vR/

Nagasaki (長崎県)
8. Chikako Ōguro (大黒ちかこ), F, 108, 1917.06.22 (lives in Nagasaki City) (per 1 September 2025)
She passed away on February 5, 2026 at the age of 108. Her last name seems to be pronounced ''Daikoku'' instead of ''Ōguro.''
Rest in peace Ms. Daikoku.
https://www.nagasaki-np.co.jp/kijis/?kijiid=ee0a1631bfef4303989401225af76d61

Okinawa (沖縄県)
4. Hatsue Sakukawa (佐久川初枝), F, 109, 1915.11 - 1916.01 (lives in Urasoe) (per 1 September 2025)
She was most likely born on January 13, 1916. If she were still alive, she would be 110 years old, but her current status is unknown. 

7. Yukie Yamaguchi (山口ユキヱ), F, 108, 1917.03.05 (lives in Sasebo) (per 1 September 2025)
She passed away on around February 12, 2026 at the age of 108.
Rest in peace Ms. Yamaguchi.
https://okuyami-information.com/2026-2-15%E9%95%B7%E5%B4%8E-%E3%81%8A%E6%82%94%E3%82%84%E3%81%BF%E6%83%85%E5%A0%B1/

Suzuyo Hashimoto (橋本寿々代), 1916/1917 - с.07.01.2026, 109 (died in Takahagi City, Ibaraki Prefecture)

Chiyo Kuriyama (栗山チヨ), 1916/1917* - 19.01.2026, 109 (died in Joetsu City, Niigata Prefecture)
* Her DOB is known, but was never made public (so I won't post it here).

https://web.archive.org/web/20260125155034/https://www.joetsutj.com/2026/01/21/033000

Masao Mashiko (兼子正男), 1918/1919 - 14.02.2026, 107 (died in Sapporo City, Hokkaido (Tyuo Ward)

Shizu Furukawa (Kogawa?) (古河静), 1916/1917 - c.03.02.2026, 109 (died in Kanda Town, Fukuoka)

@mr-tsubaki 

Chiyo Kurihara (栗原チヨ), 1916/1917* - 19.01.2026, 109 (died in Joetsu City, Niigata Prefecture)
Her last name is "Kuriyama (栗山)", not "Kurihara (栗原)".

Thank you for all the updates, guys, they are much appreciated.

Tōkyō (東京都)
-. Not Available, F, 111, 1914.01.19 (lives in Adachi) (per 1 January 2026)
-. Not Available, F, 110, 1915.12.02 - 1916.01.01 (lives in Adachi) (per 1 January 2026)
-. Not Available, F, 109, 1916.04.02 - 1916.05.01 (lives in Adachi) (per 1 January 2026)
All three women are still alive as of February 1, 2026. The oldest living person in the ward is now 112 years old.
https://www.city.adachi.tokyo.jp/koseki/ku/aramashi/ager202601.html

Hyōgo (兵庫県)
-. Not Available, F, 109, 1916.01 (lives in Takarazuka) (per 31 August 2025)
As of January 31, 2026, the oldest living person in the city is a 106-year-old woman. This would mean that this woman is in a state of "Limbo". The last time she was confirmed alive was December 31, 2025.
https://www.city.takarazuka.hyogo.jp/_res/projects/default_project/_page_/001/009/913/_nenrei/nenrei2602-2.xlsx

Okayama (岡山県)
1. Yukiko Honda (本田幸子), F, 112, 1913.03.15 (lives in Okayama City) (oldest living person in the prefecture) (per 31 December 2025)
-. Not Available, F, 109, 1916.09 (lives in Okayama City) (per 31 December 2025) [might well be #7 or 8]
Ms. Honda, the oldest living person in Okayama City (and in all of Okayama Prefecture), is confimed alive 112 years old as of January 31, 2026. However, as of the same day, there were no 109-year-old women in the city. The woman born in September 1916 was last confimed alive on December 31, 2025.
https://www.city.okayama.jp/shisei/0000078945.html

-. Natsuko Morimoto (森本夏子), F, 109, 1916.07.13 - 2026.01.16 (died in Aikawa)
She lived in Akaiwa City (赤磐市), not Aikawa.

Nagasaki (長崎県)
5. Not Available, U, 108, 1917.01.07 - 1917.02.17 (residence undisclosed) (per 1 September 2025)
This person may live in Ōmura City. Although the gender has not been disclosed, Ōmura City's oldest living person recently celebrated who 109th birthday at a facility in the city.

Miyazaki (宮崎県)
8. Masako Nagatomo (長友マサ子), F, 107, 1917.10.15 (lives in Nobeoka) (per 1 September 2025)
She has celebrated her 108th birthday in October 2025.
https://www.instagram.com/totoro.minoruen/reel/DP0xg8bE02f/

Okinawa (沖縄県)
6. Mitsu Goya (呉屋光), F, 109, 1916.05 (lives in Nakagusuku) (per 1 September 2025)
According to the village's population statistics, she was 109 years old and alive as of September 30, 2025, but as of October 31, 2025, her survival could not be confirmed. As of October 31, 2025, the oldest person in the village was a 108-year-old woman (probably Ms. Nae Yonaha). It can be confirmed that Ms. Yonaha is still alive as of January 31, 2026.
https://www.vill.nakagusuku.okinawa.jp/UserFiles/File/jumin/R7_9_nenrei.pdf
https://www.vill.nakagusuku.okinawa.jp/UserFiles/File/jumin/R7_10_nenrei.pdf
https://www.vill.nakagusuku.okinawa.jp/UserFiles/File/jumin/R8_1_nenrei.pdf

Omura City, Nagasaki Prefecture
The 109-year-old woman should be one of these three.

岩下ハルヱ 1917.1.26
山石ハル 1917.2.1
今里ハル  1917.2.12

https://www.city.omura.nagasaki.jp/kouhou/shise/koho/koho/kohoomura/backnumber/documents/3gatsu14-20.pdf

https://www.city.omura.nagasaki.jp/kouhou/shise/koho/koho/kohoomura/backnumber/documents/4gatsu18-24.pdf

Masao Mashiko (兼子正男), 1918/1919 - 14.02.2026, 107 (died in Sapporo City, Hokkaido (Tyuo Ward)

→From Hokkaido's announcement
Born between February 1, 1918, and September 15, 1918.
All 106-year-old males have been identified.

(per 1 September 2025)

-Susumu Sakuma 107,1918.1.15 : Date
-Toshiji Fujii 107,1918.1.30 : Ebetsu  died
-Unknown 107,1918.?.?  Sapporo?
-Unknown 107,1918.?.?  Sapporo?
-Sadao suzuki 107,1918.?.? :Asahikawa
-Unknown 107,1918.?.? :Unknown
-Jisouta Shimamura 106,1918.10.? : Noboribetsu  died
-Kazumi Ueda 106,1919.1.1/3.17 :Sapporo
-Kishio Tsutsumi 106,1919.3.18 :Toyako
-Masahiko Takahashi 106,1919.5.15 ：Hakodate

Thank you for your help once more, it's great to have more information and research and help available! 😍 

Posted by: @onishiki

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岩下ハルヱ 1917.1.26

Considering the birthday was celebrated on 24 January, I am inclined to believe Mrs Iwashita is our unidentified centenarian.