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Ryoichi Naito file photo [28576]

Ryoichi Naito

Given NameRyoichi


ww2dbaseRyoichi Naito was a medical doctor attached to the Japanese Army, with specialty in microbiology. In the 1930s and 1940s, he was a high ranking officer with Unit 731, Japan's human experimentation program located in northeastern China. He escaped Soviet capture at the end of the war and returned to Japan. Due to his ill-gotten knowledge, he was granted immunity from war crimes investigations so that he could share the knowledge with the American occupation. He went on to have a successful career, cofounding the firm Japan Blood Bank (now the pharmaceutical firm Green Cross Corporation) in 1950; some of the fellow cofounders were also former members of Unit 731. He passed away in Jul 1982. In 1998, it was discovered that he had lied to the American occupation, saying that Unit 731 had never used humans in experiments.

Last Major Revision: Jun 2019

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