Sunao Tsuboi

was a Japanese anti-nuclear and anti-war activist.
He was a survivor of the atomic bombing of Hiroshima. He was the co-chair of Nihon Hidankyo, a Japan-wide organisation of atomic and hydrogen bomb sufferers. 
In 2011 he was awarded the Kiyoshi Tanimoto peace prize.
Tsuboi died on October 24, 2021 in Hiroshima at the age of 96.