Ryan Cox (9 April 1979 – 1 August 2007) was a South African professional road racing cyclist. He had been cycling since 1987 and turned professional in 2000. He first joined Amore e Vita but changed, the following year to Team Cologne which was based in Germany. He had been a member of Team Barloworld since 2003. In 2004 and 2005 he won the South African National Road Race Championships.
Cox died at Kempton Park Hospital when the main artery in his left leg burst, three weeks after a vascular lesion operation in France for a knotted artery.