Ikuo Oyama

(20 September 1880 – 30 November 1955) was a Japanese academic, politician, political scientist and writer.

Life in Prewar Japan Ikuo Oyama was born on 20 September 1880. He graduated from Waseda University in 1905. After studying at the University of Chicago and the Ludwig-Maximilians-Universität München, he became a professor of Waseda University in 1915. In 1926, he became chairman of the Labour-Farmer Party.

In 1928, the Labour-Farmer Party was banned due to accusations of having links to communism. The same year in 1928 the Communist International had denounced Oyama as a "social democrat and a handmaiden of the capitalist imperialists.". By the time Oyama had founded the Labor Farmer Party in 1928 he had severed all connection with the Communist Party.

Yamamoto Senji, a colleague of Oyama, was assassinated on the same day as he had presented testimony in the Japanese Diet regarding torture of prisoners.

Life in the United States Oyama went to live in the United States in 1932. In 1947, Colegrove would denounce Ikuo Oyama after Oyama began to advocate a common front between Socialists and Communists against the Japanese government and GHQ.

During his time in the United States he worked closely with the US Government.

Ikuo Oyama died of a subdural hematoma in 1955.