Shitsu Nakano, who was the fourth oldest person in the world, died Sunday in Ogoori in southern Fukuoka prefecture, said an official at her nursing home. A funeral will be held on Tuesday.
She became the nation's oldest person after Yone Minagawa, who was certified by the Guinness Book of World Records as the world's oldest person, died last week at age 114, also in Fukuoka.
Edna Parker, 114, who lives in the Midwestern US state of Indiana, became the world's oldest person after the death of Minagawa, who was less than four months older.
More than 28,000 Japanese are 100 years or older, up from a mere 1,000 at the start of the 1980s, in a trend attributed to a healthy traditional diet and a high standard of health care.