Eitaro Itoyama (糸山 英太郎, Itoyama Eitarō, born June 4, 1942 in Tokyo, Japan) is one of Japan's wealthiest citizens with a fortune estimated to exceed $500 million. He is a controversial figure in Japanese political and commercial life. In 1989 he was included in Forbes top ten richest people, he placed 10th, however by 1991 he had drop off the list. He is a best-selling author, with books on political and business subjects, and is the chairman and benefactor of an eponymous educational institution.