Athletics at the 2000 Summer Olympics – Men's 4 × 400 metres relay
The 4 × 400 metres relay races at the 2000 Summer Olympics as part of the athletics program were held on 29 and 30 September. The top two teams in each of the initial five heats automatically qualified for the semi-final. The next six fastest teams from across the heats also qualified. The top three teams in each of the semi-finals automatically qualified for the final. The next two fastest team from the semi-finals also qualified.