Maryam Mirzakhani, the first Iranian and the first woman to receive the Fields medal, died in July 2017 after a fight with breast cancer. She was the first Iranian and the first woman to receive the Fields medal. In 2000, she was only 40 years old when she passed away.
Yutaka Taniyama
Yutaka Taniyama was a Japanese mathematician who, unfortunately, committed suicide on November 17, 1958, at thirty-three.