Justin Alexander Gatlin is a retired American sprinter who competed in the 60 meters, 100 meters, and 200 meters. He is the 2004 Olympic Champion in the 100 meters, the 2005 and 2017 World Champion in the 100 meters, the 2005 World Champion in the 200 meters, and the 2019 World Champion in the 4 × 100 meters relay. In addition, Gatlin is the 2003 and 2012 World Indoor Champion in the 60 meters. He is a 5-time Olympic medalist and a 12-time World Championship medalist. At the World Athletics Relays, Gatlin won two gold medals in the 4 × 100 meters relay in 2015 and 2017. Gatlin is also a record 3-time Diamond League Champion in the 100 meters. He won the Diamond League trophy in 2013, 2014 and 2015.
Justin Gatlin's personal best of 9.74 seconds ranks fifth on the all-time list of male 100-meter athletes. He is a two-time 100 meters World Champion (2005 & 2017) and a two-time 60 meters World Indoor Champion (2003 & 2012). Gatlin won both the 100 meters and 200 meters at the 2005 World Championships.