2008 IAAF World Indoor Championships – Men's 400 metres Heats Heats

| Heat | Lane | Name_ | Country | Mark |
|---|---|---|---|---|
| 4 | 5 | Maksim Dyldin | Russia | 46.96 |
| 4 | 6 | David Neville | United States | 47.43 |
| 4 | 3 | Edino Steele | Jamaica | 47.51 |
| 4 | 4 | Andrés Silva | Uruguay | 47.54 SB |
| 4 | 1 | Carlos Santa | Dominican Republic | 48.10 |
| 4 | 2 | Dalibor Spasovski | Macedonia | DNF |
| 5 | 5 | Johan Wissman | Sweden | 46.12 PB |
| 5 | 6 | Chris Brown | Bahamas | 46.47 |
| 5 | 4 | DeWayne Barrett | Jamaica | 47.02 |
| 5 | 1 | Mamoudou Hanne | Mali | 48.44 |
| 5 | 3 | Alleyne Francique | Grenada | 48.64 |
| 5 | 2 | Takeshi Fujiwara | El Salvador | 48.82 NR |