Perdita Felicien is a Canadian retired hurdler. Felicien is the 2003 World champion in the 100 metres hurdles and 2004 World indoor champion in the 60 metres hurdles. She also won silver medals at the 2007 World Championships, the 2010 World Indoor Championships, and twice at the Pan American Games. Her best time for the 100 metres hurdles of 12.46 secs from 2004 still stands as the Canadian record.
Joanna Dove Hayes is an American hurdler, who won the gold medal in the 100 metres hurdles at the 2004 Summer Olympics.
Yvonne Harrison Castro, also spelled Ivonne is a Puerto Rican athlete who specialized in the 400 metres hurdles. She competed at two World Junior Championships, two World Championships, one World Indoor Championships and one Olympic Games.
Kerron Stephon Clement is a Trinidadian-born American track and field athlete who competes in the 400-meter hurdles and 400-meter sprint. He held the indoor world record in the 400-meter sprint, having broken Michael Johnson's mark in 2005.
Cynithia "Janay" DeLoach is a United States track and field athlete who won the bronze medal in the women's long jump at the 2012 Summer Olympics. She was listed in The Coloradoan's #3 Top Sports Story of 2011 about her road to the 2012 Olympics. She is currently signed to Nike and trains in Colorado.
Queen Quedith Claye née Harrison is an American hurdler and sprinter who competed in the 400 metres hurdles at the 2008 Summer Olympics. She was a six-time collegiate All-American at Virginia Tech where she was elected to its sports hall of fame. Queen is a meet director for Virginia's Best Track and Field Classic - VHSL meet hosted in Richmond, Virginia started in 2017.
Alysia Montaño is an American middle distance runner. She is a six-time USA Outdoor Track and Field Championships 800 metres champion. She gained significant publicity for the 2014 race that she competed while 8 months pregnant.
Brenda Taylor is an American track and field athlete who specialises in the 400 meter hurdles. She reached the final of the event at the 2004 Summer Olympics. She also competed at the 2001 World Championships in Athletics and won a medal at the 2003 IAAF World Indoor Championships in the 4×400-meter relay.
Eilidh Doyle is a retired British track and field athlete. Originally running as Eilidh Child, she specialised in the 400 metres hurdles outdoors, and the 400 metres flat indoors, as well as the 4 x 400 metres relay on both surfaces. She represented Great Britain at the 2012 Olympic Games in London, and won an Olympic bronze medal in the 4 x 400 metres relay at the 2016 Games in Rio de Janeiro. Individually, she is the 2014 European Champion and a three-time Commonwealth silver medalist in the 400 metres hurdles.
Dalilah Muhammad is an American track and field athlete who specializes in the 400 meters hurdles. She is the 2016 Rio Olympics champion 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. 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.
Ashley Spencer is an American track and field athlete who competes in the 400 metres and the 400 metres hurdles. In the 400m hurdles, she is the 2016 Olympic bronze medalist. In the 400m, she is the 2012 World Junior Champion and the 2016 World Indoor silver medalist. She is coached by 1996 Olympic bronze medalist Tonya Buford-Bailey.
Janieve Russell is a Jamaican track and field athlete who competes mainly in the 400 metres hurdles and the 400 metres sprint. She won an Olympic bronze medal in the 4 × 400 m relay in Tokyo 2021, where she also finished fourth in the 400m hurdles final in a personal best of 53.08 secs. She is a four-time Commonwealth Games gold medallist, winning the 400m hurdles title in 2018 and 2022, and the 4 × 400 m relay in 2014 and 2018. She has also won two relay silvers at the World Championships and a relay gold at the World Indoor Championships.
Kristi Castlin is an American track and field athlete who specializes in the 100 metres hurdles. She won a bronze medal at the 2016 Olympics. Her personal best for the event is 12.50 seconds, set on July 8, 2016, during the finals of the 2016 United States Olympic Trials, in which she qualified for the 2016 Summer Olympics by placing 2nd. She was the 2012 American champion in the indoor 60 metres hurdles and represented the United States at the 2012 IAAF World Indoor Championships. She shares the world record for the shuttle hurdle relay, with her time of 50.78 seconds set in 2013.
Kendra "Keni" Harrison is an American hurdler. Harrison held the world record in the women's 100 metres hurdles with a time of 12.20 seconds, set on July 22, 2016 at the London Müller Anniversary Games, breaking the previous world record of 12.21 seconds achieved nearly 28 years earlier by Bulgarian athlete Yordanka Donkova.
Raevyn Rogers is an American middle-distance athlete. She won a bronze medal in the 800 meters at the 2020 Tokyo Olympics, becoming the fourth fastest woman in U.S. history in the event. At the 2019 World Championships, Rogers came from seventh with 100m remaining in the race to place silver over USA teammate Ajeé Wilson in bronze. She earned a world indoor title as a member of national 4x400 m relay squad that took gold at the 2018 World Indoor Championships.
Byron Robinson is an American track and field athlete who competes in the 400 metres hurdles. He holds a personal record of 48.58 seconds for the event. He was the runner-up at the United States Olympic Trials in 2016.
Suziann Reid is an American-Jamaican former track and field sprinter who specialized in the 400-meter dash. She set a personal record of 50.74 seconds for the distance in 1999. She was a silver medalist with the American women's 4 × 400-meter relay team at the 1999 World Championships in Athletics. She was part of the World Championship team twice more, in 2001 and 2005, and helped the United States to silver at the 2002 IAAF World Cup and gold at the 2001 Goodwill Games.
The women's 400 metres hurdles event at the 2020 Summer Olympics took place between 31 July and 4 August 2021 at the Japan National Stadium. 39 athletes from 25 nations competed.
Jaide Alexandra Stepter Baynes is an American track and field athlete who specializes in the 400 metres.
Savannah Sutherland is a Canadian track and field athlete. She is the Canadian national record holder over 400m indoors.
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