Johannesburg is a 1999 horse that was born in 1999 and raced from 2001 to 2002. He was sired by Hennessy out of the Ogygian mare Myth. He was trained by Aidan O'Brien and raced for Michael B. Tabor, Mrs. John 'Susan' Magnier, and was bred in Kentucky, United States by Wayne G. Lyster, III. Johannesburg has raced at Ascot Racecourse, Belmont Park, Churchill Downs, Curragh-IRE, Deauville-FR, , Leopardstown-IRE, Newcastle Racecourse with wins at Ascot Racecourse, Belmont Park, Curragh-IRE, Deauville-FR, , Leopardstown-IRE, Newcastle Racecourse. His stakes wins include wins in the 2001 Breeders' Cup Juvenile (G1), 2001 Middle Park Stakes (G1), 2001 Prix Morny (G1), 2001 Phoenix Stakes (G1), 2001 Anglesey Stakes (G3), 2001 Norfolk Stakes (G3), and the 2001 Maiden (LS).