| Masa Iseri | |
| Birth: | 19 September 1902 Japan |
| Death: | 5 March 2016 Kumamoto City, Kumamoto Prefecture, Japan |
| Age: | 113 years, 168 days |
| Country: |  JPN
|
| Validated | |
Masa Iseri (Japanese: 井芹マサ) (19 September 1902 – 5 March 2016) was a validated Japanese supercentenarian who was the oldest living person in Kumamoto Prefecture and the 14th-oldest living person in the world at the time of her death. She became the oldest person in Kumamoto Prefecture after the passing of 109-year-old Michida Coto on 24 December 2011.
She died in Kumamoto city on 5 March 2016, aged 113 years, 168 days.