Rai Benjamin (born July 27, 1997) is an American professional hurdler and sprinter specializing in the 400 m and 400 m hurdles. He is the joint third fastest man in history in the 400 m hurdles with a personal best time of 46.98 s, one of only four times in history under 47.00 s. He won a silver medal at his first World Championships in 2019 in the men's 400 m hurdles, and a gold medal in the 4 × 400 m relay at the same competition. In college Benjamin ran for the UCLA Bruins and then the USC Trojans, where in early 2018 he was part of the team that set the world best time in the indoor 4 × 400 m relay with a time of 3:00.77. At the time, his relay split time of 44.35 s was the fastest ever recorded in an indoor race. In June of the same year he also helped set the NCAA record in the same event but outdoors, and ran what was at the time the second fastest 400 m hurdles race of all-time in 47.02 s.