List of Famous people named Masao

Masao Kawai was a Japanese primatologist, who forwarded the concept of kyokan as a means of studying primates in his book Life of Japanese Monkeys (1969).

Masao Horiba was a Japanese businessman. In 1945, he founded Horiba Radio Laboratory, now Horiba Ltd., a manufacturer of advanced analytical and measurement technology. Masao Horiba received several awards from the Japanese government including a national Blue Ribbon Medal, and was the first non-American to receive the Pittcon Heritage Award.

Masao Kimura was Japanese professional wrestler, best known by his ring name Rusher Kimura . He was a five-time IWA World Heavyweight Champion, making him a five-time world champion.

Masao Mimatsu was a Japanese postmaster who recorded the growth of the Shōwa-shinzan mountain in 1944–1945.

Masao Inoue is a Japanese professional wrestler who currently works for Pro Wrestling Noah as a freelancer. He started his career in All Japan Pro Wrestling in 1991, before jumping to Pro Wrestling Noah during a mass exodus in 2000. Inoue spent the next 12 years with Noah before returning to AJPW in 2012. Since then, he has competed regularly for both promotions as a freelancer.

Masao Kobayashi is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet. A native of Nakano, Tokyo and high school graduate, he was elected to the House of Councillors for the first time in 2004.

Masao Maruyama was a leading Japanese political scientist and political theorist. His expertise lay in the history of Japanese political thought, to which he made major contributions.

Masao Adachi is a Japanese screenwriter and director who was most active in the 1960s and 1970s.