400 m, Men
| Competition | 1989 South-East Asian Games (SEA Games) |
|---|---|
| Venue |
Kuala Lumpur
 MAS
|
| Held | 21 – 22 August 1989 |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Isidro del Prado |  PHI |
47.20 | ||
| 🥈 | Nordin Mohamed Jadi | MAS |
47.89 | ||
| 🥉 | Yuthana Thonglek |  THA |
48.31 |