Allen Kenneth Johnson is an American former hurdling athlete who won the gold medal in the 110 metre hurdles at the 1996 Summer Olympics in Atlanta, Georgia. He is also a four-time world champion.
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.
Derrick Ralph Adkins is a former American track and field athlete who specialized in the 400-meter hurdles. He was an Olympic gold medalist in that event at the 1996 Summer Olympics and World Champion at the 1995 World Championships in Athletics. He was the fastest man in the world in the 1994 and 1996 seasons, and holds a personal record of 47.54 seconds. Adkins was a two-time national champion at the USA Outdoor Track and Field Championships.
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.
Jason Richardson is an American track and field athlete who specializes in the 110 meter hurdles. He won the gold medal in the 110 meter hurdles at the 2011 World Championships in Daegu, and the silver medal in the same event at the 2012 Summer Olympics in London. His personal best for the event is 12.98 seconds, set in June 2012 at the U.S. Olympic Trials.
John Bryan Bronson is an American 400-meter hurdler, who won the bronze medal at the 1997 World Championships in Athens. He also represented his country at the 1996 Summer Olympics. He won three consecutive titles at the USA Outdoor Track and Field Championships from 1996 to 1998.
Johnny Dutch is an American athlete, specialising in the 400m hurdles.
Jeshua Anderson is a retired American sprinter, who specializes in the 400 meter hurdles. He is a 3 time NCAA champion in the 400m hurdles and was the second freshman from Washington State University to ever win the NCAA title. In 2008 Anderson was 400 meter hurdles Junior World Champion and holds the second fastest high school time recorded in the 300m hurdles. He was born and raised in Woodland Hills, California and attended Taft High School. After winning the 2011 Outdoor Championships, Anderson had the competed for team USA at the world championships. He also participated in the 2016 Olympic trials in which he finished as a finalist.
Reginald Wyatt is an American hurdler. He is the current holder of the NFHS record in the 300 meters intermediate hurdles at 35.02, set while winning a preliminary race at the CIF California State Meet on June 5, 2009 at Buchanan High School in Clovis, California. Wyatt won the State Meet the following day, but his time of 36.71 was not destined to be record material after he also won the 400 metres in 46.13 earlier at the same meet.
Eddie Lovett is an American born U.S. Virgin Islander sprinter who specializes in the 110 metres hurdles. He currently attends the University of Florida. At the time of the 2016 Rio Olympics, in which he represented the U.S. Virgin Islands, he was a volunteer assistant coach at Penn State University.
Andrew Parker is a Jamaican track and field athlete who competed in the 110 metres hurdles. He won the event at the 1987 Pan American Games and represented Jamaica at the 1988 Summer Olympics as well as the 1987 World Championships in Athletics.
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.
Shamier Little is an American track and field sprinter specializing in the 400 metres hurdles. As a 20-year-old college sophomore at Texas A&M University, Little was the 2015 US champion. She then went on to win the silver medal in her signature event at the 2015 and 2023 World Championships. In July 2021, she became the fifth fastest woman of all time at the event.
The 2003 USA Outdoor Track and Field Championships was organised by USA Track & Field and held from June 19 to 22 at the Cobb Track & Angell Field in Palo Alto, California. The four-day competition served as the national championships in track and field for the United States and also the trials for the 2003 World Championships in Athletics.
The 1997 USA Outdoor Track and Field Championships was organised by USA Track & Field and held from June 20 to 24 at the IU Michael A. Carroll Track & Soccer Stadium in Indianapolis, Indiana. The four-day competition served as the national championships in track and field for the United States and also the trials for the 1997 World Championships in Athletics in Athens, Greece.
Derrick Williams is an American former track and field athlete who competed in the 400-meter hurdles. He was a finalist at the 2007 World Championships in Athletics and holds a personal record of 48.26 seconds.
Amere Lattin is an American track and field athlete who specializes in the hurdles, mostly 400-meter hurdles. He was the silver medalist at the 2019 Pan American Games, running 48.98 in the 400 m hurdles final.
Kenneth Selmon is an American track and field athlete who specializes in the 400 metres hurdles. He won the USA Outdoor Championship in 2018 and represented his country at the 2018 Athletics World Cup in London, where he won the 400 metres hurdles.
Trevor Bassitt is an American track and field athlete.
The 2023 USA Outdoor Track and Field Championships were held at Hayward Field in Eugene, Oregon from July 6–9, 2023. They served as USA Track & Field's (USATF) national championships in track and field for the United States.
United States 
