The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women.
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.
Jonathan Nsenga is a retired Belgian hurdler.
Laurent Ottoz is an Italian hurdler. He won four medals, at senior level, at international athletics competitions.
Lauren Boden is an Australian athletics competitor. Her events are the 400 metre hurdles, 400 metres and long jump. She was the youngest woman to win the 400 metres hurdle event at the Australian national championships. She has competed in the long jump event and the 400 metres hurdle event at the World University Games. She has competed at the 2006 and 2010 Commonwealth Games and the 2012 and 2016 Summer Olympics in the 400 metre hurdles event.
Guntis Peders is a retired Latvian athlete who specialised in the high hurdles. His biggest success is the silver medal at the 1996 European Indoor Championships in Stockholm, where his country, thanks to him and Igors Kazanovs, for the first time won two medals in one event. In addition, he represented Latvia at the 1996 Summer Olympics, as well as 1995 and 1997 World Championships.
Johan Lisabeth is a retired Belgian athlete who specialised in the high hurdles. He represented his country at the 1996 Summer Olympics, reaching the semifinals, and 1995 World Championships, reaching the second round.
Devynne Ashtyn Charlton is a Bahamian athlete specialising in the 100 metres hurdles.
Jacqueline Nana A. D. Agyepong is a retired English athlete who competed in the 100 metres hurdles. She represented Great Britain at the 1992 and 1996 Summer Olympics, as well as two outdoor and two indoor World Championships. In addition, she won the silver medal at the 1994 Commonwealth Games.
Nur Herman Majid is a retired Malaysian who specialised in the sprint hurdles. He represented his country at the 1992 Summer Olympics as well as two indoor and one outdoor World Championships. In addition he won multiple medals on regional level.
Tetyana Yuriivna Melnyk is a Ukrainian track and field sprinter and hurdler who competes in the 400 metres flat and 400 metres hurdles. She represented her country at the 2016, 2020, and 2024 Summer Olympics. Her personal bests are 51.92 seconds for the 400 m and 57.40 seconds for the 400 m hurdles.
Emmanuel Romary is a retired French athlete who specialised in the sprint hurdles. He represented his country at the 1996 Summer Olympics and 1995 World Championships.
Gianni Tozzi is an Italian former athlete who competed in the sprint hurdles. He won the silver medal at the 1987 Mediterranean Games. In addition, he represented his country at the 1987 World Championships without advancing from the first round.
Seán Cahill is an Irish former athlete who specialised in the high hurdles. He represented his country at the 1996 Summer Olympics as well as two World Championships.
Eric Kaiser is a retired Cameroonian-born German athlete who specialised in the sprint hurdles. He represented his country at the 1996 Summer Olympics as well as two World Championships. Earlier in his career he competed in the decathlon.
Ludvy Vaillant is a French athlete competing primarily in the 400 metres hurdles. He represented his country at the 2017 World Championships reaching the semifinals. In addition, he won a bronze medal at the 2017 European U23 Championships.
Abderrahman Almoubarrake Samba Alsaleck is a Qatari male track and field athlete who specialises in the 400 metres hurdles. He was born and raised in Saudi Arabia but chose to represent Mauritania – his father's homeland – before eventually switching allegiance to Qatar and moving to Doha in 2015. He became eligible to compete for his adopted country in May 2016. He was the second person to run the 400m hurdle event in less than 47 seconds.
Valdó Szűcs is a Hungarian athlete specialising in the high hurdles. He represented his country at the 2020 Olympic Games in Tokyo where he missed out on the final by 0.08 hundredths of a second. He finished 13th place. Also he represented Hungary at one outdoor and two indoor European Championships and one outdoor World Championship.
Eduardo Rodrigues dos Santos de Deus Junior is a Brazilian specialising in the high hurdles. He won a bronze medal at the 2019 Pan American Games.
Paulien Couckuyt is a Belgian track and field athlete who specializes in middle-distance running and 400 metres hurdles.
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