2003 European Athletics U23 Championships – Men's 400 metres

The men's 400 metres event at the 2003 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zawisza Stadion on 17 and 20 July.

Final
19 July

Heats
18 July Qualified: first 2 in each heat and 2 best to the Final

Participation
According to an unofficial count, 24 athletes from 15 countries participated in the event.


 * 🇧🇾 belarus (1)
 * 🇧🇪 belgium (1)
 * 🇨🇿 czech republic (1)
 * 🇫🇷 france (3)
 * 🇩🇪 germany (2)
 * 🇬🇧 united kingdom (2)
 * 🇮🇪 ireland (2)
 * 🇮🇹 italy (1)
 * undefined (1)
 * 🇲🇹 malta (1)
 * 🇵🇱 poland (3)
 * 🇷🇺 russia (2)
 * 🇪🇸 spain (1)
 * 🇸🇪 sweden (1)
 * 🇺🇦 ukraine (2)