Susumu Ōno (大野 晋, Ōno Susumu; August 23, 1919 – July 14, 2008) was a Tokyo-born linguist, specializing in the early history of the Japanese language. He graduated from the University of Tokyo in 1943, where he studied under Shinkichi Hashimoto. He was professor emeritus at Gakushuin University.
Source: “Susumu Ōno”, English Wikipedia (CC BY-SA 4.0), excerpt