Tetsu Ishii (15 September 1904 - 4 March 2017) was a verified Japanese supercentenarian. She was the oldest ever person in Aomori prefecture. She was a resident of Takko town.
At her 110th birthday, she was recuperating in the hospital since she hurt her leg. Her eldest son, Yoshikazu, said that her secret to longevity is her generous personality.
- 石井テツさん死去／県内最高齢者, 7 March 2017