is a Japanese supermarket chains owned by Aeon. The company was founded in Osaka in 1957 by Isao Nakauchi, opening its first location near Sembayashi Station.

By 1972, Daiei had become Japan's top retailer by sales, and in 1980, it became the first Japanese retail company to surpass 1 trillion yen in annual revenue. At its peak, it was one of Japan's leading retail conglomerates,