Toshinobu Onosato (1912-1986) was a Japanese artist born in Nagano. He learned oil painting at Atelier Tsuda Seifu and established Kokushoku Youga Ten in 1935. In 1938, he became a member of Jiyu Bijutsuka Kyokai until he left in 1956, after which he became an independent artist. During World War II, he was drafted and became a prisoner of war in Siberia until his release in 1948. He continued to create art upon returning to Japan, specializing in circle paintings and prints at his atelier in Kiryu. Onosato represented Japan at the Venice Biennale in 1964 and 1966, and he was known for his avant-garde art both before and after the war. 

1966
Selected as entry for the first Japanese Art Festival, New York
1966
Selected as Japan’s entry for the Venice Biennale.
1965–1966
Museum of Modern Art, New York, “New Japanese Paintings and Sculpture”
1965–1966
Exhibited in The Nagano Museum of Modern Arts Show
1965
Group show,”Moderne Malerei aus Japan,” Kunsthaus Zurich
1964
Exhibited at the Guggenheim international and Venice Biennale
1964
Included in “Masterpieces of Modern Japanese Art” during the Tokyo Olympics, National Museum of Modern Art, Tokyo
1963
Grand Price Tokyo Biennale
1956
“Abstract and Fantasy” exhibition, Museum of Modern Art, Tokyo.
1956
“Art of The World Today” exhibition, Tokyo.