Andrzej Stanisław Badeński was a Polish sprinter who specialized in the 400 metres. He won a bronze medal in that event at the 1964 Summer Olympics, and won the gold medal in that event at the European Indoor Championships in 1968 and in 1971.
Marc Raquil is a French runner of Martiniquais origin who competes in the 400 metres and 4x400m relay. He won the 4x400m relay gold medal and the 400m silver medal at the 2003 World Championships. In 2004, his 4x400m relay team was retroactively awarded gold medals after the United States 4x400m relay team was stripped of its gold medals due to the failed drug tests of two members of the relay. Since Jerome Young had also finished first in the 400m at the 2003 World Championships, the failed drug test also resulted in Raquil being retroactively awarded a silver medal in the 400m. Raquil has also won three gold medals and one bronze medal at the European Indoor and Outdoor Championships.
Robert "Rob" John Tobin is an English sprinter. He currently has a PB in the 400 m of 45.01 seconds.
Todd Anthony Bennett was a British athlete who competed mainly in the 400 metres.
Jan Werner was a Polish sprinter who specialized in the 200 and 400 metres.
Ryszard Podlas is a Polish sprinter who specialized in the 400 metres.
Nataliya Pyhyda is a Ukrainian track and field sprinter who specializes in the 200 and 400 metres. Her personal best times are 22.82 seconds (2008) and 50.62 seconds (2015), respectively.
Claudio Licciardello is a track and field sprinter from Italy, who specializes in the 400 metres. His personal best time is 45.25 seconds, achieved in the heats at the 2008 Olympics in Beijing.
Antonina Yefremova is a Ukrainian sprinter who specializes in the 400 metres. Yefremova received a two-year ban in 2012 for using testosterone at the 2011 World Athletics Championships.
Phara Anacharsis is a French athlete who specializes in the 400 metres and the 400 metres hurdles.
Olha Zavhorodnya is a Ukrainian athlete who specializes in the 400 metres and 800 metres. She is the most famous athlete to come from the small industrial town of Pryluky.
Stanisław Grędziński was a Polish sprinter who specialized in the 400 metres.
Jan Balachowski is a retired Polish sprinter who specialized in the 400 metres.
Rafał Omelko is a retired Polish athlete who specialised in the 400 metres. He won two medals in the 4 × 400 metres relay at the European Athletics Championships.
Jakub Krzewina is a Polish track and field sprinter who specialises in the 400 metres. A frequent competitor for Poland in the 4×400 metres relay, he has won two medals at the European Athletics Championships and reached the final at the 2016 Summer Olympics. He was also a relay silver medallist with Europe at the 2014 IAAF Continental Cup.
Fred Mango is a retired French sprinter who specialized in the 400 metres.
Łukasz Krawczuk is a Polish sprinter specialising in the 400 metres. He has won two medals in the 4 × 400 metres relay at the European Athletics Championships.
Christopher O'Donnell is an Irish track and field athlete competing in sprinting events. He represented Ireland at the 2020 Summer Olympics in the Mixed 4 x 400m relay where he was part of the first ever Irish team to run in an Olympic final, and was also part of the team who reached the final of the 2022 and 2023 World Championships. He is the current Irish U20 record holder in the 400 metres, with a time of 46.54, set on 22 July 2017 at the European U20 Championships, where he finished 6th in the final. His personal best of 45.26 seconds sits joint-2nd on the Irish all-time list and he is a 5-time National 400m champion.
Elija Godwin is an American athlete who specialises in the 400 metres.
Alex Haydock-Wilson is a British track and field athlete. In 2023, he became British 400 metres champion.
