2019 Asian Athletics Championships – Men's 400 metres hurdles
The men's 400 metres hurdles at the 2019 Asian Athletics Championships was held on 21 and 22 April.
Medalists
Results
Heats
Qualification rule: First 3 in each heat and the next 2 fastest qualified for the final.| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Abderrahman Samba | 49.57 | Q, SB | |
| 2 | 1 | Takatoshi Abe | 49.63 | Q | |
| 3 | 2 | Chen Chieh | 49.87 | Q | |
| 4 | 2 | Bassem Hemeida | 49.98 | Q, SB | |
| 5 | 2 | Jabir Madari Pillyalil | 50.15 | q | |
| 6 | 1 | Yu Chia-hsuan | 50.22 | Q, SB | |
| 7 | 2 | Mahdi Pirjahan | 50.32 | q, NR | |
| 8 | 1 | Mehboob Ali | 50.40 | Q, SB | |
| 9 | 2 | Feng Zhiqiang | 50.71 | SB | |
| 10 | 2 | Lim Chan-ho | 50.94 | ||
| 11 | 1 | Gong Debin | 50.96 | SB | |
| 12 | 1 | Abdullah Rizqallah Mulayhi | 51.15 | ||
| 13 | 2 | Dmitriy Koblov | 51.39 | SB | |
| 14 | 1 | Francis Medina | 52.49 | ||
| 15 | 1 | Alisher Pulotov | 52.88 | PB | |
| 16 | 2 | Ow Yeong Wei Bin | 54.14 | ||
| 17 | 1 | Amor Ebed Abdalmujied | 55.08 | SB | |
| 18 | 1 | Pipatporn Paungpi | 55.18 | SB |