The men's 400 metres event at the 1999 European Athletics U23 Championships was held in Göteborg, Sweden, at Ullevi on 29, 30, and 31 July 1999.
[1][2] 31 July 30 July Qualified: first 4 in each to the Final 29 July Qualified: first 3 in each heat and 4 best to the Semifinal According to an unofficial count, 31 athletes from 20 countries participated in the event.