Haruko Tanaka is a validated Japanese supercentenarian known as the oldest living person in Tottori Prefecture, Japan.

Tanaka was born on 7 March 1914 in Kawahara (now part of Tottori City), Tottori Prefecture, Japan.

At the age of 21, she was married and had four children with her husband.


Haruko Tanaka at 110.

Before celebrating her 110th birthday, she contracted COVID-19 but recovered. Because of the incident, her birthday celebration was held two months later. At her birthday party, she received gifts from nursing home users, staff, and family members.

On 3 March 2024, she became the oldest living person in  Tottori Prefecture, Japan, following the passing of Tomiko Osaki