| Date | 24 September 1988 — 9:50 |
|---|---|
| Location | Ol-lim-pik Ju-gyeong-gi-jang, Seoul Sports Complex, Seoul |
| Pos | Lane | Competitor | NOC | Time (Automatic) | |||
|---|---|---|---|---|---|---|---|
| 1 | 7 | Steve Lewis |  USA | 45.31 | |||
| 2 | 6 | Jens Carlowitz |  GDR | 45.64 | |||
| 3 | 3 | Gabriel Tiacoh |  CIV | 47.19 | |||
| 4 | 5 | Jean-Didace Bémou |  CGO | 48.46 | |||
| 5 | 2 | Abdullah Ali Ahmed |  LBA | 48.89 | |||
| 6 | 4 | Jonathan Chipalo |  ZAM | 48.97 | |||
| 7 | 1 | Maher Abbas |  LBN | 51.29 | |||
| 8 | 8 | Carlton Usher |  BIZ | 51.42 |
