CO476 is an early-medium maturity (76 d to flowering), mostly stiff stalk (BSSS), yellow flint inbred which combines well with a stiff stalk B14-type and Iodent-type testers in many different locations. CO476 possesses moderate resistance to gibberella ear rot both in the inbred and in hybrid combinations. It has intermediate response to common smut, Fusarium stalk rot, northern corn leaf blight, common rust, and Goss’s wilt.