CJ Cheil Jedang (Hangul: 씨제이제일제당, CJ제일제당; KRX: 001041) is a South Korea-based food and bio business holding company and a subsidiary of CJ Group. It is the largest food firm in Korea. Its businesses are food ingredient, food, pharmaceutics and biotechnology. It is headquartered at CJ Cheiljedang Building in Ssangnim-dong, Jung-gu, Seoul.