Coby Miller (born October 19, 1976) is an American track and field athlete, who specialises in the sprint events. In his career, he recorded a sub-10 second personal best in the 100 meters and a sub-20 second best in the 200 meters. In the latter distance, he won the 1999 Summer Universiade and reached the 2000 Sydney Olympics final. He suffered leg injuries in the 2001 and 2002 seasons, but returned in late 2002 as part of the gold-medal-winning American 4 x 100 m relay team at the IAAF World Cup, breaking the championship record. He ran under ten seconds in the 100 m Olympics Trials in 2004, but failed to qualify for the event. However, he won an Olympic silver medal at the 2004 Athens Games as part of the American 4 x 100 m relay team. At his peak he was regularly ranked among the top ten American sprinters.