Korg began as Keio Gijutsu Kenkyujo Ltd. The company later changed its name to Keio Electronic Laboratories and later to Keio Giken Kogyo Inc. The company started manufacturing synthesizers under the brand name KORG in the late 1960s, and due to the popularity of Korg products, the company finally changed its name to Korg in 1985.
The company's first product was the Donca Matic DA-20 drum machine.
Yamaha purchased a controlling interest in Korg in 1987, and in 1993 Korg's founder bought out its shares and the company became independent again. Korg purchased the Vox amplifier company in 1992.