400 m, Men
| Competition | 1999 South-East Asian Games (SEA Games) |
|---|---|
| Venue |
Bandar Seri Begawan
 BRU
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Narong Nilploy |  THA |
47.02 | ||
| 🥈 | Romzi Bakar |  MAS |
47.08 | ||
| 🥉 | Virot Sornhirun | THA |
47.16 |