Yaohan (Japanese: ヤオハン or 八百半; Chinese: 八佰伴) was a Japanese retail group. The company was founded in 1930 by Kazuo Wada (和田一夫). Initially a single shop, it later expanded into a major supermarket chain after the Second World War with most retail outlets located in Shizuoka prefecture, south of Tokyo. It was listed on Tokyo Stock Exchange. The store was far more established and notable outside Japan, such that by the time it opened its first store in the Tokyo metropolitan area, the company was already in a state of decline due to accumulated debts from over-expansion.