Dalilah Muhammad (born February 7, 1990)[1] is an American track and field athlete who specializes in the 400 meters hurdles. She is the 2016 Rio Olympics champion[2] and 2020 Tokyo Olympics silver medalist, becoming at the latter the then-second-fastest woman of all time in the event with her personal best of 51.58 seconds.[3] Muhammad was second at both the 2013 and 2017 World Championships to take her first gold in 2019, setting the former world record of 52.16 s. She was the second female 400 m hurdler in history, after Sally Gunnell, to have won the Olympic, World titles and broken the world record. At both the 2019 World Championships and Tokyo Games, she also took gold as part of women's 4 × 400 metres relay team.
Muhammad won the 400 m hurdles at the 2007 World Youth Championships, and placed second in the event at the 2009 Pan American Junior Championships. Collegiately, she ran for the USC Trojans, for whom she was a four-time All-American at the NCAA Outdoor Championships. She was also the 2013, 2016, and 2017 American national champion[4] and a two-time Diamond League winner.