400 m, Women
| Competition | 2021 South-East Asian Games (SEA Games) |
|---|---|
| Venue |
Hanoi
 VIE
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Nguyễn Thị Huyền | VIE |
52.83 | ||
| 🥈 | Benny Nontanam |  THA |
54.01 | ||
| 🥉 | Quách Thị Lan | VIE |
54.40 |